Home / 135,719.75-187,298.25-81,994.35

Finding the Fourth Proportional to 135,719.75, 187,298.25 and 81,994.35

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Solution

The fourth proportional to 135,719.75, 187,298.25 and 81,994.35 is: 113,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,719.75 : 187,298.25 = 81,994.35 : x
  2. Step 2: Convert to fraction form
    135,719.75/187,298.25 = 81,994.35/x
  3. Step 3: Cross multiply
    135,719.75x = 187,298.25 × 81,994.35
  4. Step 4: Simplify right side
    135,719.75x = 15,357,398,363.61
  5. Step 5: Solve for x
    x = 15,357,398,363.61/135,719.75
  6. Step 6: Final answer
    x = 113,155.22

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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.