Home / 135,018.19-186,326.66-74,587.57

Finding the Fourth Proportional to 135,018.19, 186,326.66 and 74,587.57

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Solution

The fourth proportional to 135,018.19, 186,326.66 and 74,587.57 is: 102,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,018.19 : 186,326.66 = 74,587.57 : x
  2. Step 2: Convert to fraction form
    135,018.19/186,326.66 = 74,587.57/x
  3. Step 3: Cross multiply
    135,018.19x = 186,326.66 × 74,587.57
  4. Step 4: Simplify right side
    135,018.19x = 13,897,652,795.62
  5. Step 5: Solve for x
    x = 13,897,652,795.62/135,018.19
  6. Step 6: Final answer
    x = 102,931.71

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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.