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Finding the Fourth Proportional to 130,987.92, 180,750.12 and 74,388.24

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Solution

The fourth proportional to 130,987.92, 180,750.12 and 74,388.24 is: 102,648.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,987.92 : 180,750.12 = 74,388.24 : x
  2. Step 2: Convert to fraction form
    130,987.92/180,750.12 = 74,388.24/x
  3. Step 3: Cross multiply
    130,987.92x = 180,750.12 × 74,388.24
  4. Step 4: Simplify right side
    130,987.92x = 13,445,683,306.59
  5. Step 5: Solve for x
    x = 13,445,683,306.59/130,987.92
  6. Step 6: Final answer
    x = 102,648.27

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1.5x scale

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.