Home / 231,182.34-319,030.45-129,207.76

Finding the Fourth Proportional to 231,182.34, 319,030.45 and 129,207.76

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Solution

The fourth proportional to 231,182.34, 319,030.45 and 129,207.76 is: 178,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,182.34 : 319,030.45 = 129,207.76 : x
  2. Step 2: Convert to fraction form
    231,182.34/319,030.45 = 129,207.76/x
  3. Step 3: Cross multiply
    231,182.34x = 319,030.45 × 129,207.76
  4. Step 4: Simplify right side
    231,182.34x = 41,221,208,695.70
  5. Step 5: Solve for x
    x = 41,221,208,695.70/231,182.34
  6. Step 6: Final answer
    x = 178,306.05

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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.