Home / 115,938.40-173,677.20-66,632.80

Finding the Fourth Proportional to 115,938.40, 173,677.20 and 66,632.80

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Solution

The fourth proportional to 115,938.40, 173,677.20 and 66,632.80 is: 99,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,938.40 : 173,677.20 = 66,632.80 : x
  2. Step 2: Convert to fraction form
    115,938.40/173,677.20 = 66,632.80/x
  3. Step 3: Cross multiply
    115,938.40x = 173,677.20 × 66,632.80
  4. Step 4: Simplify right side
    115,938.40x = 11,572,598,132.16
  5. Step 5: Solve for x
    x = 11,572,598,132.16/115,938.40
  6. Step 6: Final answer
    x = 99,816.78

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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.