Home / 151,371.92-208,938.48-87,738.32

Finding the Fourth Proportional to 151,371.92, 208,938.48 and 87,738.32

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Solution

The fourth proportional to 151,371.92, 208,938.48 and 87,738.32 is: 121,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,371.92 : 208,938.48 = 87,738.32 : x
  2. Step 2: Convert to fraction form
    151,371.92/208,938.48 = 87,738.32/x
  3. Step 3: Cross multiply
    151,371.92x = 208,938.48 × 87,738.32
  4. Step 4: Simplify right side
    151,371.92x = 18,331,911,218.55
  5. Step 5: Solve for x
    x = 18,331,911,218.55/151,371.92
  6. Step 6: Final answer
    x = 121,105.10

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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.