Home / 131,540.12-181,536.08-77,816.46

Finding the Fourth Proportional to 131,540.12, 181,536.08 and 77,816.46

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Solution

The fourth proportional to 131,540.12, 181,536.08 and 77,816.46 is: 107,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,540.12 : 181,536.08 = 77,816.46 : x
  2. Step 2: Convert to fraction form
    131,540.12/181,536.08 = 77,816.46/x
  3. Step 3: Cross multiply
    131,540.12x = 181,536.08 × 77,816.46
  4. Step 4: Simplify right side
    131,540.12x = 14,126,494,718.79
  5. Step 5: Solve for x
    x = 14,126,494,718.79/131,540.12
  6. Step 6: Final answer
    x = 107,393.05

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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.