Home / 127,979.80-191,724.90-68,795.80

Finding the Fourth Proportional to 127,979.80, 191,724.90 and 68,795.80

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Solution

The fourth proportional to 127,979.80, 191,724.90 and 68,795.80 is: 103,062.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,979.80 : 191,724.90 = 68,795.80 : x
  2. Step 2: Convert to fraction form
    127,979.80/191,724.90 = 68,795.80/x
  3. Step 3: Cross multiply
    127,979.80x = 191,724.90 × 68,795.80
  4. Step 4: Simplify right side
    127,979.80x = 13,189,867,875.42
  5. Step 5: Solve for x
    x = 13,189,867,875.42/127,979.80
  6. Step 6: Final answer
    x = 103,062.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.