Home / 149,840.80-206,904.72-99,767.20

Finding the Fourth Proportional to 149,840.80, 206,904.72 and 99,767.20

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Solution

The fourth proportional to 149,840.80, 206,904.72 and 99,767.20 is: 137,761.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,840.80 : 206,904.72 = 99,767.20 : x
  2. Step 2: Convert to fraction form
    149,840.80/206,904.72 = 99,767.20/x
  3. Step 3: Cross multiply
    149,840.80x = 206,904.72 × 99,767.20
  4. Step 4: Simplify right side
    149,840.80x = 20,642,304,581.18
  5. Step 5: Solve for x
    x = 20,642,304,581.18/149,840.80
  6. Step 6: Final answer
    x = 137,761.57

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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.