Home / 156,032.09-215,322.17-87,122.62

Finding the Fourth Proportional to 156,032.09, 215,322.17 and 87,122.62

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Solution

The fourth proportional to 156,032.09, 215,322.17 and 87,122.62 is: 120,228.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,032.09 : 215,322.17 = 87,122.62 : x
  2. Step 2: Convert to fraction form
    156,032.09/215,322.17 = 87,122.62/x
  3. Step 3: Cross multiply
    156,032.09x = 215,322.17 × 87,122.62
  4. Step 4: Simplify right side
    156,032.09x = 18,759,431,273.99
  5. Step 5: Solve for x
    x = 18,759,431,273.99/156,032.09
  6. Step 6: Final answer
    x = 120,228.04

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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.