Home / 129,370.55-178,526.72-72,007.97

Finding the Fourth Proportional to 129,370.55, 178,526.72 and 72,007.97

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Solution

The fourth proportional to 129,370.55, 178,526.72 and 72,007.97 is: 99,368.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,370.55 : 178,526.72 = 72,007.97 : x
  2. Step 2: Convert to fraction form
    129,370.55/178,526.72 = 72,007.97/x
  3. Step 3: Cross multiply
    129,370.55x = 178,526.72 × 72,007.97
  4. Step 4: Simplify right side
    129,370.55x = 12,855,346,337.92
  5. Step 5: Solve for x
    x = 12,855,346,337.92/129,370.55
  6. Step 6: Final answer
    x = 99,368.41

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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.