Home / 99,650,966.80-149,476,450.20-85,780,356.70

Finding the Fourth Proportional to 99,650,966.80, 149,476,450.20 and 85,780,356.70

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Solution

The fourth proportional to 99,650,966.80, 149,476,450.20 and 85,780,356.70 is: 128,670,535.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,650,966.80 : 149,476,450.20 = 85,780,356.70 : x
  2. Step 2: Convert to fraction form
    99,650,966.80/149,476,450.20 = 85,780,356.70/x
  3. Step 3: Cross multiply
    99,650,966.80x = 149,476,450.20 × 85,780,356.70
  4. Step 4: Simplify right side
    99,650,966.80x = 12,822,143,216,405,786
  5. Step 5: Solve for x
    x = 12,822,143,216,405,786/99,650,966.80
  6. Step 6: Final answer
    x = 128,670,535.05

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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.