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Finding the Fourth Proportional to 170,155.89, 255,290.67 and 75,373.20

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Solution

The fourth proportional to 170,155.89, 255,290.67 and 75,373.20 is: 113,084.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,155.89 : 255,290.67 = 75,373.20 : x
  2. Step 2: Convert to fraction form
    170,155.89/255,290.67 = 75,373.20/x
  3. Step 3: Cross multiply
    170,155.89x = 255,290.67 × 75,373.20
  4. Step 4: Simplify right side
    170,155.89x = 19,242,074,728.04
  5. Step 5: Solve for x
    x = 19,242,074,728.04/170,155.89
  6. Step 6: Final answer
    x = 113,084.98

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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.