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Finding the Fourth Proportional to 124,865.40, 187,362.90 and 54,751.80

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Solution

The fourth proportional to 124,865.40, 187,362.90 and 54,751.80 is: 82,156.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,865.40 : 187,362.90 = 54,751.80 : x
  2. Step 2: Convert to fraction form
    124,865.40/187,362.90 = 54,751.80/x
  3. Step 3: Cross multiply
    124,865.40x = 187,362.90 × 54,751.80
  4. Step 4: Simplify right side
    124,865.40x = 10,258,456,028.22
  5. Step 5: Solve for x
    x = 10,258,456,028.22/124,865.40
  6. Step 6: Final answer
    x = 82,156.11

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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.