Home / 129,526.38-178,748.94-78,526.62

Finding the Fourth Proportional to 129,526.38, 178,748.94 and 78,526.62

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Solution

The fourth proportional to 129,526.38, 178,748.94 and 78,526.62 is: 108,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,526.38 : 178,748.94 = 78,526.62 : x
  2. Step 2: Convert to fraction form
    129,526.38/178,748.94 = 78,526.62/x
  3. Step 3: Cross multiply
    129,526.38x = 178,748.94 × 78,526.62
  4. Step 4: Simplify right side
    129,526.38x = 14,036,550,086.78
  5. Step 5: Solve for x
    x = 14,036,550,086.78/129,526.38
  6. Step 6: Final answer
    x = 108,368.27

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1.5x scale

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.