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Finding the Fourth Proportional to 124,850.10, 187,392.60 and 65,728.20

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Solution

The fourth proportional to 124,850.10, 187,392.60 and 65,728.20 is: 98,654.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,850.10 : 187,392.60 = 65,728.20 : x
  2. Step 2: Convert to fraction form
    124,850.10/187,392.60 = 65,728.20/x
  3. Step 3: Cross multiply
    124,850.10x = 187,392.60 × 65,728.20
  4. Step 4: Simplify right side
    124,850.10x = 12,316,978,291.32
  5. Step 5: Solve for x
    x = 12,316,978,291.32/124,850.10
  6. Step 6: Final answer
    x = 98,654.13

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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.