Home / 123,509.06-170,442.61-66,920.43

Finding the Fourth Proportional to 123,509.06, 170,442.61 and 66,920.43

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Solution

The fourth proportional to 123,509.06, 170,442.61 and 66,920.43 is: 92,350.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,509.06 : 170,442.61 = 66,920.43 : x
  2. Step 2: Convert to fraction form
    123,509.06/170,442.61 = 66,920.43/x
  3. Step 3: Cross multiply
    123,509.06x = 170,442.61 × 66,920.43
  4. Step 4: Simplify right side
    123,509.06x = 11,406,092,416.92
  5. Step 5: Solve for x
    x = 11,406,092,416.92/123,509.06
  6. Step 6: Final answer
    x = 92,350.25

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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.