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Finding the Fourth Proportional to 135,377, 186,794.34 and 87,623.72

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Solution

The fourth proportional to 135,377, 186,794.34 and 87,623.72 is: 120,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,377 : 186,794.34 = 87,623.72 : x
  2. Step 2: Convert to fraction form
    135,377/186,794.34 = 87,623.72/x
  3. Step 3: Cross multiply
    135,377x = 186,794.34 × 87,623.72
  4. Step 4: Simplify right side
    135,377x = 16,367,614,945.74
  5. Step 5: Solve for x
    x = 16,367,614,945.74/135,377
  6. Step 6: Final answer
    x = 120,903.96

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1.5x scale

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.