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Finding the Fourth Proportional to 113,403.62, 156,498 and 63,102.62

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Solution

The fourth proportional to 113,403.62, 156,498 and 63,102.62 is: 87,082.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,403.62 : 156,498 = 63,102.62 : x
  2. Step 2: Convert to fraction form
    113,403.62/156,498 = 63,102.62/x
  3. Step 3: Cross multiply
    113,403.62x = 156,498 × 63,102.62
  4. Step 4: Simplify right side
    113,403.62x = 9,875,433,824.76
  5. Step 5: Solve for x
    x = 9,875,433,824.76/113,403.62
  6. Step 6: Final answer
    x = 87,082.17

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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.