Home / 134,854.20-186,054.42-87,135.66

Finding the Fourth Proportional to 134,854.20, 186,054.42 and 87,135.66

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Solution

The fourth proportional to 134,854.20, 186,054.42 and 87,135.66 is: 120,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,854.20 : 186,054.42 = 87,135.66 : x
  2. Step 2: Convert to fraction form
    134,854.20/186,054.42 = 87,135.66/x
  3. Step 3: Cross multiply
    134,854.20x = 186,054.42 × 87,135.66
  4. Step 4: Simplify right side
    134,854.20x = 16,211,974,682.62
  5. Step 5: Solve for x
    x = 16,211,974,682.62/134,854.20
  6. Step 6: Final answer
    x = 120,218.54

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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.