Home / 129,907,557-179,272,366.38-77,696,591.58

Finding the Fourth Proportional to 129,907,557, 179,272,366.38 and 77,696,591.58

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Solution

The fourth proportional to 129,907,557, 179,272,366.38 and 77,696,591.58 is: 107,221,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907,557 : 179,272,366.38 = 77,696,591.58 : x
  2. Step 2: Convert to fraction form
    129,907,557/179,272,366.38 = 77,696,591.58/x
  3. Step 3: Cross multiply
    129,907,557x = 179,272,366.38 × 77,696,591.58
  4. Step 4: Simplify right side
    129,907,557x = 13,928,851,832,206,982
  5. Step 5: Solve for x
    x = 13,928,851,832,206,982/129,907,557
  6. Step 6: Final answer
    x = 107,221,259.13

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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.