Home / 129,259,895.76-178,318,582.92-77,019,639.12

Finding the Fourth Proportional to 129,259,895.76, 178,318,582.92 and 77,019,639.12

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Solution

The fourth proportional to 129,259,895.76, 178,318,582.92 and 77,019,639.12 is: 106,251,307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,259,895.76 : 178,318,582.92 = 77,019,639.12 : x
  2. Step 2: Convert to fraction form
    129,259,895.76/178,318,582.92 = 77,019,639.12/x
  3. Step 3: Cross multiply
    129,259,895.76x = 178,318,582.92 × 77,019,639.12
  4. Step 4: Simplify right side
    129,259,895.76x = 13,734,032,904,888,196
  5. Step 5: Solve for x
    x = 13,734,032,904,888,196/129,259,895.76
  6. Step 6: Final answer
    x = 106,251,307.29

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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.