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Finding the Fourth Proportional to 156,152.01, 215,489.73 and 84,531.98

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Solution

The fourth proportional to 156,152.01, 215,489.73 and 84,531.98 is: 116,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,152.01 : 215,489.73 = 84,531.98 : x
  2. Step 2: Convert to fraction form
    156,152.01/215,489.73 = 84,531.98/x
  3. Step 3: Cross multiply
    156,152.01x = 215,489.73 × 84,531.98
  4. Step 4: Simplify right side
    156,152.01x = 18,215,774,402.28
  5. Step 5: Solve for x
    x = 18,215,774,402.28/156,152.01
  6. Step 6: Final answer
    x = 116,654.11

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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.