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Finding the Fourth Proportional to 147,473.60, 221,053.92 and 72,488

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Solution

The fourth proportional to 147,473.60, 221,053.92 and 72,488 is: 108,655.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,473.60 : 221,053.92 = 72,488 : x
  2. Step 2: Convert to fraction form
    147,473.60/221,053.92 = 72,488/x
  3. Step 3: Cross multiply
    147,473.60x = 221,053.92 × 72,488
  4. Step 4: Simplify right side
    147,473.60x = 16,023,756,552.96
  5. Step 5: Solve for x
    x = 16,023,756,552.96/147,473.60
  6. Step 6: Final answer
    x = 108,655.09

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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.