Home / 215,565.17-297,489.11-120,071.90

Finding the Fourth Proportional to 215,565.17, 297,489.11 and 120,071.90

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Solution

The fourth proportional to 215,565.17, 297,489.11 and 120,071.90 is: 165,704.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,565.17 : 297,489.11 = 120,071.90 : x
  2. Step 2: Convert to fraction form
    215,565.17/297,489.11 = 120,071.90/x
  3. Step 3: Cross multiply
    215,565.17x = 297,489.11 × 120,071.90
  4. Step 4: Simplify right side
    215,565.17x = 35,720,082,810.37
  5. Step 5: Solve for x
    x = 35,720,082,810.37/215,565.17
  6. Step 6: Final answer
    x = 165,704.34

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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.