Home / 142,655,728,894.71-196,865,032,533.63-78,427,545,976.23

Finding the Fourth Proportional to 142,655,728,894.71, 196,865,032,533.63 and 78,427,545,976.23

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Solution

The fourth proportional to 142,655,728,894.71, 196,865,032,533.63 and 78,427,545,976.23 is: 108,230,083,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655,728,894.71 : 196,865,032,533.63 = 78,427,545,976.23 : x
  2. Step 2: Convert to fraction form
    142,655,728,894.71/196,865,032,533.63 = 78,427,545,976.23/x
  3. Step 3: Cross multiply
    142,655,728,894.71x = 196,865,032,533.63 × 78,427,545,976.23
  4. Step 4: Simplify right side
    142,655,728,894.71x = 15,439,641,390,142,887,821,312
  5. Step 5: Solve for x
    x = 15,439,641,390,142,887,821,312/142,655,728,894.71
  6. Step 6: Final answer
    x = 108,230,083,080.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.