Home / 144,078,891.36-199,163,965.50-128,551,809.21

Finding the Fourth Proportional to 144,078,891.36, 199,163,965.50 and 128,551,809.21

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Solution

The fourth proportional to 144,078,891.36, 199,163,965.50 and 128,551,809.21 is: 177,700,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,078,891.36 : 199,163,965.50 = 128,551,809.21 : x
  2. Step 2: Convert to fraction form
    144,078,891.36/199,163,965.50 = 128,551,809.21/x
  3. Step 3: Cross multiply
    144,078,891.36x = 199,163,965.50 × 128,551,809.21
  4. Step 4: Simplify right side
    144,078,891.36x = 25,602,888,094,463,020
  5. Step 5: Solve for x
    x = 25,602,888,094,463,020/144,078,891.36
  6. Step 6: Final answer
    x = 177,700,479.60

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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.