Home / 112,785.38-155,648.98-64,400.44

Finding the Fourth Proportional to 112,785.38, 155,648.98 and 64,400.44

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Solution

The fourth proportional to 112,785.38, 155,648.98 and 64,400.44 is: 88,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,785.38 : 155,648.98 = 64,400.44 : x
  2. Step 2: Convert to fraction form
    112,785.38/155,648.98 = 64,400.44/x
  3. Step 3: Cross multiply
    112,785.38x = 155,648.98 × 64,400.44
  4. Step 4: Simplify right side
    112,785.38x = 10,023,862,797.55
  5. Step 5: Solve for x
    x = 10,023,862,797.55/112,785.38
  6. Step 6: Final answer
    x = 88,875.55

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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.