Home / 102,072.38-153,139.70-52,187.52

Finding the Fourth Proportional to 102,072.38, 153,139.70 and 52,187.52

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Solution

The fourth proportional to 102,072.38, 153,139.70 and 52,187.52 is: 78,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,072.38 : 153,139.70 = 52,187.52 : x
  2. Step 2: Convert to fraction form
    102,072.38/153,139.70 = 52,187.52/x
  3. Step 3: Cross multiply
    102,072.38x = 153,139.70 × 52,187.52
  4. Step 4: Simplify right side
    102,072.38x = 7,991,981,287.01
  5. Step 5: Solve for x
    x = 7,991,981,287.01/102,072.38
  6. Step 6: Final answer
    x = 78,297.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.