Home / 102,581.40-153,612.90-67,330.20

Finding the Fourth Proportional to 102,581.40, 153,612.90 and 67,330.20

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Solution

The fourth proportional to 102,581.40, 153,612.90 and 67,330.20 is: 100,825.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,581.40 : 153,612.90 = 67,330.20 : x
  2. Step 2: Convert to fraction form
    102,581.40/153,612.90 = 67,330.20/x
  3. Step 3: Cross multiply
    102,581.40x = 153,612.90 × 67,330.20
  4. Step 4: Simplify right side
    102,581.40x = 10,342,787,279.58
  5. Step 5: Solve for x
    x = 10,342,787,279.58/102,581.40
  6. Step 6: Final answer
    x = 100,825.17

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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.