Home / 231,129.76-318,953-129,156.08

Finding the Fourth Proportional to 231,129.76, 318,953 and 129,156.08

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Solution

The fourth proportional to 231,129.76, 318,953 and 129,156.08 is: 178,232.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,129.76 : 318,953 = 129,156.08 : x
  2. Step 2: Convert to fraction form
    231,129.76/318,953 = 129,156.08/x
  3. Step 3: Cross multiply
    231,129.76x = 318,953 × 129,156.08
  4. Step 4: Simplify right side
    231,129.76x = 41,194,719,184.24
  5. Step 5: Solve for x
    x = 41,194,719,184.24/231,129.76
  6. Step 6: Final answer
    x = 178,232.00

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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.