Home / 187,990.11-259,442.75-103,123.57

Finding the Fourth Proportional to 187,990.11, 259,442.75 and 103,123.57

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Solution

The fourth proportional to 187,990.11, 259,442.75 and 103,123.57 is: 142,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,990.11 : 259,442.75 = 103,123.57 : x
  2. Step 2: Convert to fraction form
    187,990.11/259,442.75 = 103,123.57/x
  3. Step 3: Cross multiply
    187,990.11x = 259,442.75 × 103,123.57
  4. Step 4: Simplify right side
    187,990.11x = 26,754,662,399.30
  5. Step 5: Solve for x
    x = 26,754,662,399.30/187,990.11
  6. Step 6: Final answer
    x = 142,319.52

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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.