Home / 129,342,519.78-178,494,559.64-73,586,740.17

Finding the Fourth Proportional to 129,342,519.78, 178,494,559.64 and 73,586,740.17

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Solution

The fourth proportional to 129,342,519.78, 178,494,559.64 and 73,586,740.17 is: 101,550,772.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,342,519.78 : 178,494,559.64 = 73,586,740.17 : x
  2. Step 2: Convert to fraction form
    129,342,519.78/178,494,559.64 = 73,586,740.17/x
  3. Step 3: Cross multiply
    129,342,519.78x = 178,494,559.64 × 73,586,740.17
  4. Step 4: Simplify right side
    129,342,519.78x = 13,134,832,781,987,248
  5. Step 5: Solve for x
    x = 13,134,832,781,987,248/129,342,519.78
  6. Step 6: Final answer
    x = 101,550,772.35

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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.