Home / 112,729.29-155,560.21-61,732.12

Finding the Fourth Proportional to 112,729.29, 155,560.21 and 61,732.12

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Solution

The fourth proportional to 112,729.29, 155,560.21 and 61,732.12 is: 85,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,729.29 : 155,560.21 = 61,732.12 : x
  2. Step 2: Convert to fraction form
    112,729.29/155,560.21 = 61,732.12/x
  3. Step 3: Cross multiply
    112,729.29x = 155,560.21 × 61,732.12
  4. Step 4: Simplify right side
    112,729.29x = 9,603,061,550.95
  5. Step 5: Solve for x
    x = 9,603,061,550.95/112,729.29
  6. Step 6: Final answer
    x = 85,186.92

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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.