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Finding the Fourth Proportional to 147,697.20, 221,545.80 and 137,782.80

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Solution

The fourth proportional to 147,697.20, 221,545.80 and 137,782.80 is: 206,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,697.20 : 221,545.80 = 137,782.80 : x
  2. Step 2: Convert to fraction form
    147,697.20/221,545.80 = 137,782.80/x
  3. Step 3: Cross multiply
    147,697.20x = 221,545.80 × 137,782.80
  4. Step 4: Simplify right side
    147,697.20x = 30,525,200,652.24
  5. Step 5: Solve for x
    x = 30,525,200,652.24/147,697.20
  6. Step 6: Final answer
    x = 206,674.20

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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.