Home / 109,889,890.20-165,023,792.10-77,767,234.20

Finding the Fourth Proportional to 109,889,890.20, 165,023,792.10 and 77,767,234.20

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Solution

The fourth proportional to 109,889,890.20, 165,023,792.10 and 77,767,234.20 is: 116,784,572.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,889,890.20 : 165,023,792.10 = 77,767,234.20 : x
  2. Step 2: Convert to fraction form
    109,889,890.20/165,023,792.10 = 77,767,234.20/x
  3. Step 3: Cross multiply
    109,889,890.20x = 165,023,792.10 × 77,767,234.20
  4. Step 4: Simplify right side
    109,889,890.20x = 12,833,443,888,812,810
  5. Step 5: Solve for x
    x = 12,833,443,888,812,810/109,889,890.20
  6. Step 6: Final answer
    x = 116,784,572.86

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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.