Home / 108,065.76-148,952.24-72,242.70

Finding the Fourth Proportional to 108,065.76, 148,952.24 and 72,242.70

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Solution

The fourth proportional to 108,065.76, 148,952.24 and 72,242.70 is: 99,575.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,065.76 : 148,952.24 = 72,242.70 : x
  2. Step 2: Convert to fraction form
    108,065.76/148,952.24 = 72,242.70/x
  3. Step 3: Cross multiply
    108,065.76x = 148,952.24 × 72,242.70
  4. Step 4: Simplify right side
    108,065.76x = 10,760,711,988.65
  5. Step 5: Solve for x
    x = 10,760,711,988.65/108,065.76
  6. Step 6: Final answer
    x = 99,575.59

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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.