Home / 131,719.80-181,724.40-83,962.20

Finding the Fourth Proportional to 131,719.80, 181,724.40 and 83,962.20

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Solution

The fourth proportional to 131,719.80, 181,724.40 and 83,962.20 is: 115,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,719.80 : 181,724.40 = 83,962.20 : x
  2. Step 2: Convert to fraction form
    131,719.80/181,724.40 = 83,962.20/x
  3. Step 3: Cross multiply
    131,719.80x = 181,724.40 × 83,962.20
  4. Step 4: Simplify right side
    131,719.80x = 15,257,980,417.68
  5. Step 5: Solve for x
    x = 15,257,980,417.68/131,719.80
  6. Step 6: Final answer
    x = 115,836.65

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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.