Home / 134,839.20-186,074.66-74,409.05

Finding the Fourth Proportional to 134,839.20, 186,074.66 and 74,409.05

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Solution

The fourth proportional to 134,839.20, 186,074.66 and 74,409.05 is: 102,682.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,839.20 : 186,074.66 = 74,409.05 : x
  2. Step 2: Convert to fraction form
    134,839.20/186,074.66 = 74,409.05/x
  3. Step 3: Cross multiply
    134,839.20x = 186,074.66 × 74,409.05
  4. Step 4: Simplify right side
    134,839.20x = 13,845,638,679.67
  5. Step 5: Solve for x
    x = 13,845,638,679.67/134,839.20
  6. Step 6: Final answer
    x = 102,682.59

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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.