Home / 128,988.48-193,365.92-45,863.04

Finding the Fourth Proportional to 128,988.48, 193,365.92 and 45,863.04

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Solution

The fourth proportional to 128,988.48, 193,365.92 and 45,863.04 is: 68,753.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,988.48 : 193,365.92 = 45,863.04 : x
  2. Step 2: Convert to fraction form
    128,988.48/193,365.92 = 45,863.04/x
  3. Step 3: Cross multiply
    128,988.48x = 193,365.92 × 45,863.04
  4. Step 4: Simplify right side
    128,988.48x = 8,868,348,923.60
  5. Step 5: Solve for x
    x = 8,868,348,923.60/128,988.48
  6. Step 6: Final answer
    x = 68,753.03

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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.