Home / 156,639.38-216,156.56-85,017.87

Finding the Fourth Proportional to 156,639.38, 216,156.56 and 85,017.87

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Solution

The fourth proportional to 156,639.38, 216,156.56 and 85,017.87 is: 117,321.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,639.38 : 216,156.56 = 85,017.87 : x
  2. Step 2: Convert to fraction form
    156,639.38/216,156.56 = 85,017.87/x
  3. Step 3: Cross multiply
    156,639.38x = 216,156.56 × 85,017.87
  4. Step 4: Simplify right side
    156,639.38x = 18,377,169,892.64
  5. Step 5: Solve for x
    x = 18,377,169,892.64/156,639.38
  6. Step 6: Final answer
    x = 117,321.52

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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.