Home / 142,655,728,891.70-196,865,032,529.47-78,427,545,973.24

Finding the Fourth Proportional to 142,655,728,891.70, 196,865,032,529.47 and 78,427,545,973.24

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Solution

The fourth proportional to 142,655,728,891.70, 196,865,032,529.47 and 78,427,545,973.24 is: 108,230,083,076.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655,728,891.70 : 196,865,032,529.47 = 78,427,545,973.24 : x
  2. Step 2: Convert to fraction form
    142,655,728,891.70/196,865,032,529.47 = 78,427,545,973.24/x
  3. Step 3: Cross multiply
    142,655,728,891.70x = 196,865,032,529.47 × 78,427,545,973.24
  4. Step 4: Simplify right side
    142,655,728,891.70x = 15,439,641,389,227,606,802,432
  5. Step 5: Solve for x
    x = 15,439,641,389,227,606,802,432/142,655,728,891.70
  6. Step 6: Final answer
    x = 108,230,083,076.08

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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.