Home / 121,275.60-182,021.40-71,293.20

Finding the Fourth Proportional to 121,275.60, 182,021.40 and 71,293.20

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Solution

The fourth proportional to 121,275.60, 182,021.40 and 71,293.20 is: 107,003.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,275.60 : 182,021.40 = 71,293.20 : x
  2. Step 2: Convert to fraction form
    121,275.60/182,021.40 = 71,293.20/x
  3. Step 3: Cross multiply
    121,275.60x = 182,021.40 × 71,293.20
  4. Step 4: Simplify right side
    121,275.60x = 12,976,888,074.48
  5. Step 5: Solve for x
    x = 12,976,888,074.48/121,275.60
  6. Step 6: Final answer
    x = 107,003.29

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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.