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Finding the Fourth Proportional to 151,367.44, 208,887.08 and 87,742.16

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Solution

The fourth proportional to 151,367.44, 208,887.08 and 87,742.16 is: 121,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,367.44 : 208,887.08 = 87,742.16 : x
  2. Step 2: Convert to fraction form
    151,367.44/208,887.08 = 87,742.16/x
  3. Step 3: Cross multiply
    151,367.44x = 208,887.08 × 87,742.16
  4. Step 4: Simplify right side
    151,367.44x = 18,328,203,595.29
  5. Step 5: Solve for x
    x = 18,328,203,595.29/151,367.44
  6. Step 6: Final answer
    x = 121,084.19

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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.