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Finding the Fourth Proportional to 156,492.68, 215,960 and 84,872.68

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Solution

The fourth proportional to 156,492.68, 215,960 and 84,872.68 is: 117,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,492.68 : 215,960 = 84,872.68 : x
  2. Step 2: Convert to fraction form
    156,492.68/215,960 = 84,872.68/x
  3. Step 3: Cross multiply
    156,492.68x = 215,960 × 84,872.68
  4. Step 4: Simplify right side
    156,492.68x = 18,329,103,972.80
  5. Step 5: Solve for x
    x = 18,329,103,972.80/156,492.68
  6. Step 6: Final answer
    x = 117,124.35

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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.