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Finding the Fourth Proportional to 156,092.62, 215,407.80 and 84,472.63

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Solution

The fourth proportional to 156,092.62, 215,407.80 and 84,472.63 is: 116,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,092.62 : 215,407.80 = 84,472.63 : x
  2. Step 2: Convert to fraction form
    156,092.62/215,407.80 = 84,472.63/x
  3. Step 3: Cross multiply
    156,092.62x = 215,407.80 × 84,472.63
  4. Step 4: Simplify right side
    156,092.62x = 18,196,063,388.51
  5. Step 5: Solve for x
    x = 18,196,063,388.51/156,092.62
  6. Step 6: Final answer
    x = 116,572.22

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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.