Home / 156,724.46-216,280.19-85,105.68

Finding the Fourth Proportional to 156,724.46, 216,280.19 and 85,105.68

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Solution

The fourth proportional to 156,724.46, 216,280.19 and 85,105.68 is: 117,446.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,724.46 : 216,280.19 = 85,105.68 : x
  2. Step 2: Convert to fraction form
    156,724.46/216,280.19 = 85,105.68/x
  3. Step 3: Cross multiply
    156,724.46x = 216,280.19 × 85,105.68
  4. Step 4: Simplify right side
    156,724.46x = 18,406,672,640.48
  5. Step 5: Solve for x
    x = 18,406,672,640.48/156,724.46
  6. Step 6: Final answer
    x = 117,446.07

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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.