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Finding the Fourth Proportional to 170,731.10, 256,019.85 and 65,515.10

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Solution

The fourth proportional to 170,731.10, 256,019.85 and 65,515.10 is: 98,243.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,731.10 : 256,019.85 = 65,515.10 : x
  2. Step 2: Convert to fraction form
    170,731.10/256,019.85 = 65,515.10/x
  3. Step 3: Cross multiply
    170,731.10x = 256,019.85 × 65,515.10
  4. Step 4: Simplify right side
    170,731.10x = 16,773,166,074.74
  5. Step 5: Solve for x
    x = 16,773,166,074.74/170,731.10
  6. Step 6: Final answer
    x = 98,243.18

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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.