Home / 134,780.67-185,937.21-78,159.24

Finding the Fourth Proportional to 134,780.67, 185,937.21 and 78,159.24

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Solution

The fourth proportional to 134,780.67, 185,937.21 and 78,159.24 is: 107,824.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,780.67 : 185,937.21 = 78,159.24 : x
  2. Step 2: Convert to fraction form
    134,780.67/185,937.21 = 78,159.24/x
  3. Step 3: Cross multiply
    134,780.67x = 185,937.21 × 78,159.24
  4. Step 4: Simplify right side
    134,780.67x = 14,532,711,021.32
  5. Step 5: Solve for x
    x = 14,532,711,021.32/134,780.67
  6. Step 6: Final answer
    x = 107,824.89

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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.