Home / 121,287.60-182,017.80-51,217.20

Finding the Fourth Proportional to 121,287.60, 182,017.80 and 51,217.20

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Solution

The fourth proportional to 121,287.60, 182,017.80 and 51,217.20 is: 76,862.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.60 : 182,017.80 = 51,217.20 : x
  2. Step 2: Convert to fraction form
    121,287.60/182,017.80 = 51,217.20/x
  3. Step 3: Cross multiply
    121,287.60x = 182,017.80 × 51,217.20
  4. Step 4: Simplify right side
    121,287.60x = 9,322,442,066.16
  5. Step 5: Solve for x
    x = 9,322,442,066.16/121,287.60
  6. Step 6: Final answer
    x = 76,862.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.