Home / 131,655.65-181,691.33-80,671.21

Finding the Fourth Proportional to 131,655.65, 181,691.33 and 80,671.21

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Solution

The fourth proportional to 131,655.65, 181,691.33 and 80,671.21 is: 111,330.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,655.65 : 181,691.33 = 80,671.21 : x
  2. Step 2: Convert to fraction form
    131,655.65/181,691.33 = 80,671.21/x
  3. Step 3: Cross multiply
    131,655.65x = 181,691.33 × 80,671.21
  4. Step 4: Simplify right side
    131,655.65x = 14,657,258,580.02
  5. Step 5: Solve for x
    x = 14,657,258,580.02/131,655.65
  6. Step 6: Final answer
    x = 111,330.27

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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.