Home / 102,372.60-153,558.90-66,943.20

Finding the Fourth Proportional to 102,372.60, 153,558.90 and 66,943.20

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Solution

The fourth proportional to 102,372.60, 153,558.90 and 66,943.20 is: 100,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,372.60 : 153,558.90 = 66,943.20 : x
  2. Step 2: Convert to fraction form
    102,372.60/153,558.90 = 66,943.20/x
  3. Step 3: Cross multiply
    102,372.60x = 153,558.90 × 66,943.20
  4. Step 4: Simplify right side
    102,372.60x = 10,279,724,154.48
  5. Step 5: Solve for x
    x = 10,279,724,154.48/102,372.60
  6. Step 6: Final answer
    x = 100,414.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.