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Finding the Fourth Proportional to 151,501.86, 209,073.42 and 87,877.44

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Solution

The fourth proportional to 151,501.86, 209,073.42 and 87,877.44 is: 121,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,501.86 : 209,073.42 = 87,877.44 : x
  2. Step 2: Convert to fraction form
    151,501.86/209,073.42 = 87,877.44/x
  3. Step 3: Cross multiply
    151,501.86x = 209,073.42 × 87,877.44
  4. Step 4: Simplify right side
    151,501.86x = 18,372,836,921.64
  5. Step 5: Solve for x
    x = 18,372,836,921.64/151,501.86
  6. Step 6: Final answer
    x = 121,271.36

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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.