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Finding the Fourth Proportional to 156,154.92, 215,492.82 and 84,534.42

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Solution

The fourth proportional to 156,154.92, 215,492.82 and 84,534.42 is: 116,656.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,154.92 : 215,492.82 = 84,534.42 : x
  2. Step 2: Convert to fraction form
    156,154.92/215,492.82 = 84,534.42/x
  3. Step 3: Cross multiply
    156,154.92x = 215,492.82 × 84,534.42
  4. Step 4: Simplify right side
    156,154.92x = 18,216,560,552.86
  5. Step 5: Solve for x
    x = 18,216,560,552.86/156,154.92
  6. Step 6: Final answer
    x = 116,656.97

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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.