Home / 134,870.85-186,122.43-74,441.61

Finding the Fourth Proportional to 134,870.85, 186,122.43 and 74,441.61

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Solution

The fourth proportional to 134,870.85, 186,122.43 and 74,441.61 is: 102,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,870.85 : 186,122.43 = 74,441.61 : x
  2. Step 2: Convert to fraction form
    134,870.85/186,122.43 = 74,441.61/x
  3. Step 3: Cross multiply
    134,870.85x = 186,122.43 × 74,441.61
  4. Step 4: Simplify right side
    134,870.85x = 13,855,253,346.31
  5. Step 5: Solve for x
    x = 13,855,253,346.31/134,870.85
  6. Step 6: Final answer
    x = 102,729.78

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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.