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Finding the Fourth Proportional to 113,035.60, 169,720.80 and 63,215.20

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Solution

The fourth proportional to 113,035.60, 169,720.80 and 63,215.20 is: 94,916.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,035.60 : 169,720.80 = 63,215.20 : x
  2. Step 2: Convert to fraction form
    113,035.60/169,720.80 = 63,215.20/x
  3. Step 3: Cross multiply
    113,035.60x = 169,720.80 × 63,215.20
  4. Step 4: Simplify right side
    113,035.60x = 10,728,934,316.16
  5. Step 5: Solve for x
    x = 10,728,934,316.16/113,035.60
  6. Step 6: Final answer
    x = 94,916.42

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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.