Home / 112,891.46-155,662.50-72,000.89

Finding the Fourth Proportional to 112,891.46, 155,662.50 and 72,000.89

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Solution

The fourth proportional to 112,891.46, 155,662.50 and 72,000.89 is: 99,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,891.46 : 155,662.50 = 72,000.89 : x
  2. Step 2: Convert to fraction form
    112,891.46/155,662.50 = 72,000.89/x
  3. Step 3: Cross multiply
    112,891.46x = 155,662.50 × 72,000.89
  4. Step 4: Simplify right side
    112,891.46x = 11,207,838,615.05
  5. Step 5: Solve for x
    x = 11,207,838,615.05/112,891.46
  6. Step 6: Final answer
    x = 99,279.78

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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.