Home / 137,708.04-189,993.78-77,269.80

Finding the Fourth Proportional to 137,708.04, 189,993.78 and 77,269.80

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Solution

The fourth proportional to 137,708.04, 189,993.78 and 77,269.80 is: 106,608.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,708.04 : 189,993.78 = 77,269.80 : x
  2. Step 2: Convert to fraction form
    137,708.04/189,993.78 = 77,269.80/x
  3. Step 3: Cross multiply
    137,708.04x = 189,993.78 × 77,269.80
  4. Step 4: Simplify right side
    137,708.04x = 14,680,781,381.84
  5. Step 5: Solve for x
    x = 14,680,781,381.84/137,708.04
  6. Step 6: Final answer
    x = 106,608.02

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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.