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Finding the Fourth Proportional to 156,370.50, 215,790.08 and 84,748.68

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Solution

The fourth proportional to 156,370.50, 215,790.08 and 84,748.68 is: 116,952.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,370.50 : 215,790.08 = 84,748.68 : x
  2. Step 2: Convert to fraction form
    156,370.50/215,790.08 = 84,748.68/x
  3. Step 3: Cross multiply
    156,370.50x = 215,790.08 × 84,748.68
  4. Step 4: Simplify right side
    156,370.50x = 18,287,924,013.35
  5. Step 5: Solve for x
    x = 18,287,924,013.35/156,370.50
  6. Step 6: Final answer
    x = 116,952.52

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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.