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Finding the Fourth Proportional to 147,377.31, 220,854.78 and 84,066.45

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Solution

The fourth proportional to 147,377.31, 220,854.78 and 84,066.45 is: 125,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,377.31 : 220,854.78 = 84,066.45 : x
  2. Step 2: Convert to fraction form
    147,377.31/220,854.78 = 84,066.45/x
  3. Step 3: Cross multiply
    147,377.31x = 220,854.78 × 84,066.45
  4. Step 4: Simplify right side
    147,377.31x = 18,566,477,320.13
  5. Step 5: Solve for x
    x = 18,566,477,320.13/147,377.31
  6. Step 6: Final answer
    x = 125,979.21

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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.