Home / 210,123.20-314,966.10-115,207.40

Finding the Fourth Proportional to 210,123.20, 314,966.10 and 115,207.40

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Solution

The fourth proportional to 210,123.20, 314,966.10 and 115,207.40 is: 172,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,123.20 : 314,966.10 = 115,207.40 : x
  2. Step 2: Convert to fraction form
    210,123.20/314,966.10 = 115,207.40/x
  3. Step 3: Cross multiply
    210,123.20x = 314,966.10 × 115,207.40
  4. Step 4: Simplify right side
    210,123.20x = 36,286,425,469.14
  5. Step 5: Solve for x
    x = 36,286,425,469.14/210,123.20
  6. Step 6: Final answer
    x = 172,691.19

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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.