Home / 108,020.67-149,001.17-77,758.07

Finding the Fourth Proportional to 108,020.67, 149,001.17 and 77,758.07

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Solution

The fourth proportional to 108,020.67, 149,001.17 and 77,758.07 is: 107,257.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,020.67 : 149,001.17 = 77,758.07 : x
  2. Step 2: Convert to fraction form
    108,020.67/149,001.17 = 77,758.07/x
  3. Step 3: Cross multiply
    108,020.67x = 149,001.17 × 77,758.07
  4. Step 4: Simplify right side
    108,020.67x = 11,586,042,273.15
  5. Step 5: Solve for x
    x = 11,586,042,273.15/108,020.67
  6. Step 6: Final answer
    x = 107,257.64

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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.