Home / 147,633.40-221,298.90-72,638.20

Finding the Fourth Proportional to 147,633.40, 221,298.90 and 72,638.20

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Solution

The fourth proportional to 147,633.40, 221,298.90 and 72,638.20 is: 108,882.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,633.40 : 221,298.90 = 72,638.20 : x
  2. Step 2: Convert to fraction form
    147,633.40/221,298.90 = 72,638.20/x
  3. Step 3: Cross multiply
    147,633.40x = 221,298.90 × 72,638.20
  4. Step 4: Simplify right side
    147,633.40x = 16,074,753,757.98
  5. Step 5: Solve for x
    x = 16,074,753,757.98/147,633.40
  6. Step 6: Final answer
    x = 108,882.91

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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.