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Finding the Fourth Proportional to 156,421.76, 215,849.28 and 88,444.64

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Solution

The fourth proportional to 156,421.76, 215,849.28 and 88,444.64 is: 122,046.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,421.76 : 215,849.28 = 88,444.64 : x
  2. Step 2: Convert to fraction form
    156,421.76/215,849.28 = 88,444.64/x
  3. Step 3: Cross multiply
    156,421.76x = 215,849.28 × 88,444.64
  4. Step 4: Simplify right side
    156,421.76x = 19,090,711,863.86
  5. Step 5: Solve for x
    x = 19,090,711,863.86/156,421.76
  6. Step 6: Final answer
    x = 122,046.39

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1.5x scale

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.