Home / 123,376.40-170,249.92-69,666.72

Finding the Fourth Proportional to 123,376.40, 170,249.92 and 69,666.72

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Solution

The fourth proportional to 123,376.40, 170,249.92 and 69,666.72 is: 96,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,376.40 : 170,249.92 = 69,666.72 : x
  2. Step 2: Convert to fraction form
    123,376.40/170,249.92 = 69,666.72/x
  3. Step 3: Cross multiply
    123,376.40x = 170,249.92 × 69,666.72
  4. Step 4: Simplify right side
    123,376.40x = 11,860,753,506.66
  5. Step 5: Solve for x
    x = 11,860,753,506.66/123,376.40
  6. Step 6: Final answer
    x = 96,134.70

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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.