Home / 137,947.80-190,353.78-77,508.84

Finding the Fourth Proportional to 137,947.80, 190,353.78 and 77,508.84

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Solution

The fourth proportional to 137,947.80, 190,353.78 and 77,508.84 is: 106,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,947.80 : 190,353.78 = 77,508.84 : x
  2. Step 2: Convert to fraction form
    137,947.80/190,353.78 = 77,508.84/x
  3. Step 3: Cross multiply
    137,947.80x = 190,353.78 × 77,508.84
  4. Step 4: Simplify right side
    137,947.80x = 14,754,100,677.42
  5. Step 5: Solve for x
    x = 14,754,100,677.42/137,947.80
  6. Step 6: Final answer
    x = 106,954.23

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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.