Home / 137,327.50-189,496-79,979.35

Finding the Fourth Proportional to 137,327.50, 189,496 and 79,979.35

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Solution

The fourth proportional to 137,327.50, 189,496 and 79,979.35 is: 110,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,327.50 : 189,496 = 79,979.35 : x
  2. Step 2: Convert to fraction form
    137,327.50/189,496 = 79,979.35/x
  3. Step 3: Cross multiply
    137,327.50x = 189,496 × 79,979.35
  4. Step 4: Simplify right side
    137,327.50x = 15,155,766,907.60
  5. Step 5: Solve for x
    x = 15,155,766,907.60/137,327.50
  6. Step 6: Final answer
    x = 110,362.21

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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.