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Finding the Fourth Proportional to 163,347.92, 225,431.32 and 90,759.56

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Solution

The fourth proportional to 163,347.92, 225,431.32 and 90,759.56 is: 125,254.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,347.92 : 225,431.32 = 90,759.56 : x
  2. Step 2: Convert to fraction form
    163,347.92/225,431.32 = 90,759.56/x
  3. Step 3: Cross multiply
    163,347.92x = 225,431.32 × 90,759.56
  4. Step 4: Simplify right side
    163,347.92x = 20,460,047,413.42
  5. Step 5: Solve for x
    x = 20,460,047,413.42/163,347.92
  6. Step 6: Final answer
    x = 125,254.41

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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.