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Finding the Fourth Proportional to 121,452.40, 182,113.80 and 51,252.40

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Solution

The fourth proportional to 121,452.40, 182,113.80 and 51,252.40 is: 76,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,452.40 : 182,113.80 = 51,252.40 : x
  2. Step 2: Convert to fraction form
    121,452.40/182,113.80 = 51,252.40/x
  3. Step 3: Cross multiply
    121,452.40x = 182,113.80 × 51,252.40
  4. Step 4: Simplify right side
    121,452.40x = 9,333,769,323.12
  5. Step 5: Solve for x
    x = 9,333,769,323.12/121,452.40
  6. Step 6: Final answer
    x = 76,851.25

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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.