Home / 138,212.53-207,222.61-61,233.73

Finding the Fourth Proportional to 138,212.53, 207,222.61 and 61,233.73

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Solution

The fourth proportional to 138,212.53, 207,222.61 and 61,233.73 is: 91,807.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,212.53 : 207,222.61 = 61,233.73 : x
  2. Step 2: Convert to fraction form
    138,212.53/207,222.61 = 61,233.73/x
  3. Step 3: Cross multiply
    138,212.53x = 207,222.61 × 61,233.73
  4. Step 4: Simplify right side
    138,212.53x = 12,689,012,679.49
  5. Step 5: Solve for x
    x = 12,689,012,679.49/138,212.53
  6. Step 6: Final answer
    x = 91,807.98

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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.