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Finding the Fourth Proportional to 137,500.53, 189,735.53 and 76,245.18

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Solution

The fourth proportional to 137,500.53, 189,735.53 and 76,245.18 is: 105,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,500.53 : 189,735.53 = 76,245.18 : x
  2. Step 2: Convert to fraction form
    137,500.53/189,735.53 = 76,245.18/x
  3. Step 3: Cross multiply
    137,500.53x = 189,735.53 × 76,245.18
  4. Step 4: Simplify right side
    137,500.53x = 14,466,420,822.39
  5. Step 5: Solve for x
    x = 14,466,420,822.39/137,500.53
  6. Step 6: Final answer
    x = 105,209.92

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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.