Home / 121,023.60-181,535.40-74,302.80

Finding the Fourth Proportional to 121,023.60, 181,535.40 and 74,302.80

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Solution

The fourth proportional to 121,023.60, 181,535.40 and 74,302.80 is: 111,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,023.60 : 181,535.40 = 74,302.80 : x
  2. Step 2: Convert to fraction form
    121,023.60/181,535.40 = 74,302.80/x
  3. Step 3: Cross multiply
    121,023.60x = 181,535.40 × 74,302.80
  4. Step 4: Simplify right side
    121,023.60x = 13,488,588,519.12
  5. Step 5: Solve for x
    x = 13,488,588,519.12/121,023.60
  6. Step 6: Final answer
    x = 111,454.20

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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.