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Finding the Fourth Proportional to 156,362.76, 215,767.62 and 88,385.76

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Solution

The fourth proportional to 156,362.76, 215,767.62 and 88,385.76 is: 121,965.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,362.76 : 215,767.62 = 88,385.76 : x
  2. Step 2: Convert to fraction form
    156,362.76/215,767.62 = 88,385.76/x
  3. Step 3: Cross multiply
    156,362.76x = 215,767.62 × 88,385.76
  4. Step 4: Simplify right side
    156,362.76x = 19,070,785,077.09
  5. Step 5: Solve for x
    x = 19,070,785,077.09/156,362.76
  6. Step 6: Final answer
    x = 121,965.01

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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.