Home / 101,972.25-140,700.38-61,678.13

Finding the Fourth Proportional to 101,972.25, 140,700.38 and 61,678.13

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Solution

The fourth proportional to 101,972.25, 140,700.38 and 61,678.13 is: 85,102.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,972.25 : 140,700.38 = 61,678.13 : x
  2. Step 2: Convert to fraction form
    101,972.25/140,700.38 = 61,678.13/x
  3. Step 3: Cross multiply
    101,972.25x = 140,700.38 × 61,678.13
  4. Step 4: Simplify right side
    101,972.25x = 8,678,135,316.80
  5. Step 5: Solve for x
    x = 8,678,135,316.80/101,972.25
  6. Step 6: Final answer
    x = 85,102.91

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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.