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Finding the Fourth Proportional to 172,034.40, 258,000.40 and 66,792.80

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Solution

The fourth proportional to 172,034.40, 258,000.40 and 66,792.80 is: 100,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,034.40 : 258,000.40 = 66,792.80 : x
  2. Step 2: Convert to fraction form
    172,034.40/258,000.40 = 66,792.80/x
  3. Step 3: Cross multiply
    172,034.40x = 258,000.40 × 66,792.80
  4. Step 4: Simplify right side
    172,034.40x = 17,232,569,117.12
  5. Step 5: Solve for x
    x = 17,232,569,117.12/172,034.40
  6. Step 6: Final answer
    x = 100,169.32

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1.5x scale

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.