Home / 147,638.70-221,458.05-54,132.30

Finding the Fourth Proportional to 147,638.70, 221,458.05 and 54,132.30

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Solution

The fourth proportional to 147,638.70, 221,458.05 and 54,132.30 is: 81,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,638.70 : 221,458.05 = 54,132.30 : x
  2. Step 2: Convert to fraction form
    147,638.70/221,458.05 = 54,132.30/x
  3. Step 3: Cross multiply
    147,638.70x = 221,458.05 × 54,132.30
  4. Step 4: Simplify right side
    147,638.70x = 11,988,033,600.02
  5. Step 5: Solve for x
    x = 11,988,033,600.02/147,638.70
  6. Step 6: Final answer
    x = 81,198.45

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1.5x scale

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.