Home / 147,909.70-221,864.55-102,638.80

Finding the Fourth Proportional to 147,909.70, 221,864.55 and 102,638.80

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Solution

The fourth proportional to 147,909.70, 221,864.55 and 102,638.80 is: 153,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,909.70 : 221,864.55 = 102,638.80 : x
  2. Step 2: Convert to fraction form
    147,909.70/221,864.55 = 102,638.80/x
  3. Step 3: Cross multiply
    147,909.70x = 221,864.55 × 102,638.80
  4. Step 4: Simplify right side
    147,909.70x = 22,771,911,174.54
  5. Step 5: Solve for x
    x = 22,771,911,174.54/147,909.70
  6. Step 6: Final answer
    x = 153,958.20

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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.