Home / 131,698.78-181,732.85-77,261.92

Finding the Fourth Proportional to 131,698.78, 181,732.85 and 77,261.92

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Solution

The fourth proportional to 131,698.78, 181,732.85 and 77,261.92 is: 106,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,698.78 : 181,732.85 = 77,261.92 : x
  2. Step 2: Convert to fraction form
    131,698.78/181,732.85 = 77,261.92/x
  3. Step 3: Cross multiply
    131,698.78x = 181,732.85 × 77,261.92
  4. Step 4: Simplify right side
    131,698.78x = 14,041,028,367.16
  5. Step 5: Solve for x
    x = 14,041,028,367.16/131,698.78
  6. Step 6: Final answer
    x = 106,614.72

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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.