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Finding the Fourth Proportional to 113,328.47, 156,398.58 and 65,572.58

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Solution

The fourth proportional to 113,328.47, 156,398.58 and 65,572.58 is: 90,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,328.47 : 156,398.58 = 65,572.58 : x
  2. Step 2: Convert to fraction form
    113,328.47/156,398.58 = 65,572.58/x
  3. Step 3: Cross multiply
    113,328.47x = 156,398.58 × 65,572.58
  4. Step 4: Simplify right side
    113,328.47x = 10,255,458,789.93
  5. Step 5: Solve for x
    x = 10,255,458,789.93/113,328.47
  6. Step 6: Final answer
    x = 90,493.22

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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.