Home / 99,744.20-137,697.84-77,032.28

Finding the Fourth Proportional to 99,744.20, 137,697.84 and 77,032.28

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Solution

The fourth proportional to 99,744.20, 137,697.84 and 77,032.28 is: 106,343.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,744.20 : 137,697.84 = 77,032.28 : x
  2. Step 2: Convert to fraction form
    99,744.20/137,697.84 = 77,032.28/x
  3. Step 3: Cross multiply
    99,744.20x = 137,697.84 × 77,032.28
  4. Step 4: Simplify right side
    99,744.20x = 10,607,178,566.28
  5. Step 5: Solve for x
    x = 10,607,178,566.28/99,744.20
  6. Step 6: Final answer
    x = 106,343.81

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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.