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Finding the Fourth Proportional to 207,033.57, 310,515.12 and 66,792.20

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Solution

The fourth proportional to 207,033.57, 310,515.12 and 66,792.20 is: 100,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,033.57 : 310,515.12 = 66,792.20 : x
  2. Step 2: Convert to fraction form
    207,033.57/310,515.12 = 66,792.20/x
  3. Step 3: Cross multiply
    207,033.57x = 310,515.12 × 66,792.20
  4. Step 4: Simplify right side
    207,033.57x = 20,739,986,445.49
  5. Step 5: Solve for x
    x = 20,739,986,445.49/207,033.57
  6. Step 6: Final answer
    x = 100,176.93

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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.