Home / 99,913.20-149,869.80-26,041.20

Finding the Fourth Proportional to 99,913.20, 149,869.80 and 26,041.20

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Solution

The fourth proportional to 99,913.20, 149,869.80 and 26,041.20 is: 39,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,913.20 : 149,869.80 = 26,041.20 : x
  2. Step 2: Convert to fraction form
    99,913.20/149,869.80 = 26,041.20/x
  3. Step 3: Cross multiply
    99,913.20x = 149,869.80 × 26,041.20
  4. Step 4: Simplify right side
    99,913.20x = 3,902,789,435.76
  5. Step 5: Solve for x
    x = 3,902,789,435.76/99,913.20
  6. Step 6: Final answer
    x = 39,061.80

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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.