Home / 123,439.68-170,346.60-66,851.28

Finding the Fourth Proportional to 123,439.68, 170,346.60 and 66,851.28

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Solution

The fourth proportional to 123,439.68, 170,346.60 and 66,851.28 is: 92,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,439.68 : 170,346.60 = 66,851.28 : x
  2. Step 2: Convert to fraction form
    123,439.68/170,346.60 = 66,851.28/x
  3. Step 3: Cross multiply
    123,439.68x = 170,346.60 × 66,851.28
  4. Step 4: Simplify right side
    123,439.68x = 11,387,888,253.65
  5. Step 5: Solve for x
    x = 11,387,888,253.65/123,439.68
  6. Step 6: Final answer
    x = 92,254.68

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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.