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Finding the Fourth Proportional to 108,545.67, 149,844.33 and 72,759.06

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Solution

The fourth proportional to 108,545.67, 149,844.33 and 72,759.06 is: 100,441.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,545.67 : 149,844.33 = 72,759.06 : x
  2. Step 2: Convert to fraction form
    108,545.67/149,844.33 = 72,759.06/x
  3. Step 3: Cross multiply
    108,545.67x = 149,844.33 × 72,759.06
  4. Step 4: Simplify right side
    108,545.67x = 10,902,532,597.13
  5. Step 5: Solve for x
    x = 10,902,532,597.13/108,545.67
  6. Step 6: Final answer
    x = 100,441.89

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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.