Home / 112,699.35-155,520.30-61,711.17

Finding the Fourth Proportional to 112,699.35, 155,520.30 and 61,711.17

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Solution

The fourth proportional to 112,699.35, 155,520.30 and 61,711.17 is: 85,158.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,699.35 : 155,520.30 = 61,711.17 : x
  2. Step 2: Convert to fraction form
    112,699.35/155,520.30 = 61,711.17/x
  3. Step 3: Cross multiply
    112,699.35x = 155,520.30 × 61,711.17
  4. Step 4: Simplify right side
    112,699.35x = 9,597,339,671.75
  5. Step 5: Solve for x
    x = 9,597,339,671.75/112,699.35
  6. Step 6: Final answer
    x = 85,158.78

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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.