Home / 134,756.38-185,948.94-78,156.82

Finding the Fourth Proportional to 134,756.38, 185,948.94 and 78,156.82

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Solution

The fourth proportional to 134,756.38, 185,948.94 and 78,156.82 is: 107,847.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,756.38 : 185,948.94 = 78,156.82 : x
  2. Step 2: Convert to fraction form
    134,756.38/185,948.94 = 78,156.82/x
  3. Step 3: Cross multiply
    134,756.38x = 185,948.94 × 78,156.82
  4. Step 4: Simplify right side
    134,756.38x = 14,533,177,832.77
  5. Step 5: Solve for x
    x = 14,533,177,832.77/134,756.38
  6. Step 6: Final answer
    x = 107,847.79

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1.5x scale

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.