Home / 135,139.19-186,497.34-89,738.89

Finding the Fourth Proportional to 135,139.19, 186,497.34 and 89,738.89

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Solution

The fourth proportional to 135,139.19, 186,497.34 and 89,738.89 is: 123,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,139.19 : 186,497.34 = 89,738.89 : x
  2. Step 2: Convert to fraction form
    135,139.19/186,497.34 = 89,738.89/x
  3. Step 3: Cross multiply
    135,139.19x = 186,497.34 × 89,738.89
  4. Step 4: Simplify right side
    135,139.19x = 16,736,063,476.79
  5. Step 5: Solve for x
    x = 16,736,063,476.79/135,139.19
  6. Step 6: Final answer
    x = 123,843.16

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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.