Home / 135,111.29-186,427.91-84,787.61

Finding the Fourth Proportional to 135,111.29, 186,427.91 and 84,787.61

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Solution

The fourth proportional to 135,111.29, 186,427.91 and 84,787.61 is: 116,990.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,111.29 : 186,427.91 = 84,787.61 : x
  2. Step 2: Convert to fraction form
    135,111.29/186,427.91 = 84,787.61/x
  3. Step 3: Cross multiply
    135,111.29x = 186,427.91 × 84,787.61
  4. Step 4: Simplify right side
    135,111.29x = 15,806,776,206.02
  5. Step 5: Solve for x
    x = 15,806,776,206.02/135,111.29
  6. Step 6: Final answer
    x = 116,990.79

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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.