Home / 155,051,002.80-213,960,742.92-85,432,487.76

Finding the Fourth Proportional to 155,051,002.80, 213,960,742.92 and 85,432,487.76

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Solution

The fourth proportional to 155,051,002.80, 213,960,742.92 and 85,432,487.76 is: 117,891,520.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,051,002.80 : 213,960,742.92 = 85,432,487.76 : x
  2. Step 2: Convert to fraction form
    155,051,002.80/213,960,742.92 = 85,432,487.76/x
  3. Step 3: Cross multiply
    155,051,002.80x = 213,960,742.92 × 85,432,487.76
  4. Step 4: Simplify right side
    155,051,002.80x = 18,279,198,550,633,408
  5. Step 5: Solve for x
    x = 18,279,198,550,633,408/155,051,002.80
  6. Step 6: Final answer
    x = 117,891,520.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.