Home / 112,850.64-155,768.16-65,135.12

Finding the Fourth Proportional to 112,850.64, 155,768.16 and 65,135.12

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Solution

The fourth proportional to 112,850.64, 155,768.16 and 65,135.12 is: 89,906.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,850.64 : 155,768.16 = 65,135.12 : x
  2. Step 2: Convert to fraction form
    112,850.64/155,768.16 = 65,135.12/x
  3. Step 3: Cross multiply
    112,850.64x = 155,768.16 × 65,135.12
  4. Step 4: Simplify right side
    112,850.64x = 10,145,977,793.78
  5. Step 5: Solve for x
    x = 10,145,977,793.78/112,850.64
  6. Step 6: Final answer
    x = 89,906.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.