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Finding the Fourth Proportional to 85,248.06, 127,938.18 and 68,648.76

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Solution

The fourth proportional to 85,248.06, 127,938.18 and 68,648.76 is: 103,026.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248.06 : 127,938.18 = 68,648.76 : x
  2. Step 2: Convert to fraction form
    85,248.06/127,938.18 = 68,648.76/x
  3. Step 3: Cross multiply
    85,248.06x = 127,938.18 × 68,648.76
  4. Step 4: Simplify right side
    85,248.06x = 8,782,797,413.66
  5. Step 5: Solve for x
    x = 8,782,797,413.66/85,248.06
  6. Step 6: Final answer
    x = 103,026.36

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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.