Home / 138,853.28-191,474.18-118,776.62

Finding the Fourth Proportional to 138,853.28, 191,474.18 and 118,776.62

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Solution

The fourth proportional to 138,853.28, 191,474.18 and 118,776.62 is: 163,789.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,853.28 : 191,474.18 = 118,776.62 : x
  2. Step 2: Convert to fraction form
    138,853.28/191,474.18 = 118,776.62/x
  3. Step 3: Cross multiply
    138,853.28x = 191,474.18 × 118,776.62
  4. Step 4: Simplify right side
    138,853.28x = 22,742,654,960.30
  5. Step 5: Solve for x
    x = 22,742,654,960.30/138,853.28
  6. Step 6: Final answer
    x = 163,789.11

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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.