Home / 131,188.12-181,007.40-76,731.82

Finding the Fourth Proportional to 131,188.12, 181,007.40 and 76,731.82

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Solution

The fourth proportional to 131,188.12, 181,007.40 and 76,731.82 is: 105,871.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,188.12 : 181,007.40 = 76,731.82 : x
  2. Step 2: Convert to fraction form
    131,188.12/181,007.40 = 76,731.82/x
  3. Step 3: Cross multiply
    131,188.12x = 181,007.40 × 76,731.82
  4. Step 4: Simplify right side
    131,188.12x = 13,889,027,235.47
  5. Step 5: Solve for x
    x = 13,889,027,235.47/131,188.12
  6. Step 6: Final answer
    x = 105,871.07

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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.