Home / 135,159.54-186,587.87-87,451.35

Finding the Fourth Proportional to 135,159.54, 186,587.87 and 87,451.35

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Solution

The fourth proportional to 135,159.54, 186,587.87 and 87,451.35 is: 120,726.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,159.54 : 186,587.87 = 87,451.35 : x
  2. Step 2: Convert to fraction form
    135,159.54/186,587.87 = 87,451.35/x
  3. Step 3: Cross multiply
    135,159.54x = 186,587.87 × 87,451.35
  4. Step 4: Simplify right side
    135,159.54x = 16,317,360,687.87
  5. Step 5: Solve for x
    x = 16,317,360,687.87/135,159.54
  6. Step 6: Final answer
    x = 120,726.67

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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.