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Finding the Fourth Proportional to 156,597.18, 216,066.63 and 89,512.38

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Solution

The fourth proportional to 156,597.18, 216,066.63 and 89,512.38 is: 123,505.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,597.18 : 216,066.63 = 89,512.38 : x
  2. Step 2: Convert to fraction form
    156,597.18/216,066.63 = 89,512.38/x
  3. Step 3: Cross multiply
    156,597.18x = 216,066.63 × 89,512.38
  4. Step 4: Simplify right side
    156,597.18x = 19,340,638,289.88
  5. Step 5: Solve for x
    x = 19,340,638,289.88/156,597.18
  6. Step 6: Final answer
    x = 123,505.66

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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.