Home / 156,251.12-215,639.80-88,280.58

Finding the Fourth Proportional to 156,251.12, 215,639.80 and 88,280.58

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Solution

The fourth proportional to 156,251.12, 215,639.80 and 88,280.58 is: 121,834.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,251.12 : 215,639.80 = 88,280.58 : x
  2. Step 2: Convert to fraction form
    156,251.12/215,639.80 = 88,280.58/x
  3. Step 3: Cross multiply
    156,251.12x = 215,639.80 × 88,280.58
  4. Step 4: Simplify right side
    156,251.12x = 19,036,806,615.08
  5. Step 5: Solve for x
    x = 19,036,806,615.08/156,251.12
  6. Step 6: Final answer
    x = 121,834.69

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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.