Home / 134,289.76-185,305.20-77,690.56

Finding the Fourth Proportional to 134,289.76, 185,305.20 and 77,690.56

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Solution

The fourth proportional to 134,289.76, 185,305.20 and 77,690.56 is: 107,204.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,289.76 : 185,305.20 = 77,690.56 : x
  2. Step 2: Convert to fraction form
    134,289.76/185,305.20 = 77,690.56/x
  3. Step 3: Cross multiply
    134,289.76x = 185,305.20 × 77,690.56
  4. Step 4: Simplify right side
    134,289.76x = 14,396,464,758.91
  5. Step 5: Solve for x
    x = 14,396,464,758.91/134,289.76
  6. Step 6: Final answer
    x = 107,204.49

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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.