Home / 123,458.82-170,373.18-66,870.21

Finding the Fourth Proportional to 123,458.82, 170,373.18 and 66,870.21

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Solution

The fourth proportional to 123,458.82, 170,373.18 and 66,870.21 is: 92,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,458.82 : 170,373.18 = 66,870.21 : x
  2. Step 2: Convert to fraction form
    123,458.82/170,373.18 = 66,870.21/x
  3. Step 3: Cross multiply
    123,458.82x = 170,373.18 × 66,870.21
  4. Step 4: Simplify right side
    123,458.82x = 11,392,890,324.97
  5. Step 5: Solve for x
    x = 11,392,890,324.97/123,458.82
  6. Step 6: Final answer
    x = 92,280.89

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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.