Home / 134,279.20-185,290.77-77,680

Finding the Fourth Proportional to 134,279.20, 185,290.77 and 77,680

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Solution

The fourth proportional to 134,279.20, 185,290.77 and 77,680 is: 107,190.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,279.20 : 185,290.77 = 77,680 : x
  2. Step 2: Convert to fraction form
    134,279.20/185,290.77 = 77,680/x
  3. Step 3: Cross multiply
    134,279.20x = 185,290.77 × 77,680
  4. Step 4: Simplify right side
    134,279.20x = 14,393,387,013.60
  5. Step 5: Solve for x
    x = 14,393,387,013.60/134,279.20
  6. Step 6: Final answer
    x = 107,190.00

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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.