Home / 147,909.40-221,864.10-139,744.60

Finding the Fourth Proportional to 147,909.40, 221,864.10 and 139,744.60

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Solution

The fourth proportional to 147,909.40, 221,864.10 and 139,744.60 is: 209,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,909.40 : 221,864.10 = 139,744.60 : x
  2. Step 2: Convert to fraction form
    147,909.40/221,864.10 = 139,744.60/x
  3. Step 3: Cross multiply
    147,909.40x = 221,864.10 × 139,744.60
  4. Step 4: Simplify right side
    147,909.40x = 31,004,309,908.86
  5. Step 5: Solve for x
    x = 31,004,309,908.86/147,909.40
  6. Step 6: Final answer
    x = 209,616.90

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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.