Home / 147,645.70-221,468.55-54,139.30

Finding the Fourth Proportional to 147,645.70, 221,468.55 and 54,139.30

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Solution

The fourth proportional to 147,645.70, 221,468.55 and 54,139.30 is: 81,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,645.70 : 221,468.55 = 54,139.30 : x
  2. Step 2: Convert to fraction form
    147,645.70/221,468.55 = 54,139.30/x
  3. Step 3: Cross multiply
    147,645.70x = 221,468.55 × 54,139.30
  4. Step 4: Simplify right side
    147,645.70x = 11,990,152,269.02
  5. Step 5: Solve for x
    x = 11,990,152,269.02/147,645.70
  6. Step 6: Final answer
    x = 81,208.95

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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.