Home / 147,438.80-221,158.20-131,109.20

Finding the Fourth Proportional to 147,438.80, 221,158.20 and 131,109.20

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Solution

The fourth proportional to 147,438.80, 221,158.20 and 131,109.20 is: 196,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,438.80 : 221,158.20 = 131,109.20 : x
  2. Step 2: Convert to fraction form
    147,438.80/221,158.20 = 131,109.20/x
  3. Step 3: Cross multiply
    147,438.80x = 221,158.20 × 131,109.20
  4. Step 4: Simplify right side
    147,438.80x = 28,995,874,675.44
  5. Step 5: Solve for x
    x = 28,995,874,675.44/147,438.80
  6. Step 6: Final answer
    x = 196,663.80

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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.