Home / 127,979.19-176,616.78-71,390.58

Finding the Fourth Proportional to 127,979.19, 176,616.78 and 71,390.58

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Solution

The fourth proportional to 127,979.19, 176,616.78 and 71,390.58 is: 98,522.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,979.19 : 176,616.78 = 71,390.58 : x
  2. Step 2: Convert to fraction form
    127,979.19/176,616.78 = 71,390.58/x
  3. Step 3: Cross multiply
    127,979.19x = 176,616.78 × 71,390.58
  4. Step 4: Simplify right side
    127,979.19x = 12,608,774,361.93
  5. Step 5: Solve for x
    x = 12,608,774,361.93/127,979.19
  6. Step 6: Final answer
    x = 98,522.07

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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.