Home / 131,209.96-181,064.52-77,512.22

Finding the Fourth Proportional to 131,209.96, 181,064.52 and 77,512.22

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Solution

The fourth proportional to 131,209.96, 181,064.52 and 77,512.22 is: 106,963.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,209.96 : 181,064.52 = 77,512.22 : x
  2. Step 2: Convert to fraction form
    131,209.96/181,064.52 = 77,512.22/x
  3. Step 3: Cross multiply
    131,209.96x = 181,064.52 × 77,512.22
  4. Step 4: Simplify right side
    131,209.96x = 14,034,712,908.43
  5. Step 5: Solve for x
    x = 14,034,712,908.43/131,209.96
  6. Step 6: Final answer
    x = 106,963.78

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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.