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Finding the Fourth Proportional to 121,495.80, 182,110.05 and 42,569.40

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Solution

The fourth proportional to 121,495.80, 182,110.05 and 42,569.40 is: 63,807.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,495.80 : 182,110.05 = 42,569.40 : x
  2. Step 2: Convert to fraction form
    121,495.80/182,110.05 = 42,569.40/x
  3. Step 3: Cross multiply
    121,495.80x = 182,110.05 × 42,569.40
  4. Step 4: Simplify right side
    121,495.80x = 7,752,315,562.47
  5. Step 5: Solve for x
    x = 7,752,315,562.47/121,495.80
  6. Step 6: Final answer
    x = 63,807.27

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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.