Home / 102,561.20-153,841.80-74,567.60

Finding the Fourth Proportional to 102,561.20, 153,841.80 and 74,567.60

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Solution

The fourth proportional to 102,561.20, 153,841.80 and 74,567.60 is: 111,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,561.20 : 153,841.80 = 74,567.60 : x
  2. Step 2: Convert to fraction form
    102,561.20/153,841.80 = 74,567.60/x
  3. Step 3: Cross multiply
    102,561.20x = 153,841.80 × 74,567.60
  4. Step 4: Simplify right side
    102,561.20x = 11,471,613,805.68
  5. Step 5: Solve for x
    x = 11,471,613,805.68/102,561.20
  6. Step 6: Final answer
    x = 111,851.40

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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.