Home / 231,126.03-318,947.81-129,152.34

Finding the Fourth Proportional to 231,126.03, 318,947.81 and 129,152.34

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Solution

The fourth proportional to 231,126.03, 318,947.81 and 129,152.34 is: 178,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,126.03 : 318,947.81 = 129,152.34 : x
  2. Step 2: Convert to fraction form
    231,126.03/318,947.81 = 129,152.34/x
  3. Step 3: Cross multiply
    231,126.03x = 318,947.81 × 129,152.34
  4. Step 4: Simplify right side
    231,126.03x = 41,192,855,353.61
  5. Step 5: Solve for x
    x = 41,192,855,353.61/231,126.03
  6. Step 6: Final answer
    x = 178,226.81

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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.