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Finding the Fourth Proportional to 130,073.72, 179,448.60 and 103,108

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Solution

The fourth proportional to 130,073.72, 179,448.60 and 103,108 is: 142,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,073.72 : 179,448.60 = 103,108 : x
  2. Step 2: Convert to fraction form
    130,073.72/179,448.60 = 103,108/x
  3. Step 3: Cross multiply
    130,073.72x = 179,448.60 × 103,108
  4. Step 4: Simplify right side
    130,073.72x = 18,502,586,248.80
  5. Step 5: Solve for x
    x = 18,502,586,248.80/130,073.72
  6. Step 6: Final answer
    x = 142,246.92

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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.