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Finding the Fourth Proportional to 151,342.76, 208,853 and 87,717.46

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Solution

The fourth proportional to 151,342.76, 208,853 and 87,717.46 is: 121,050.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,342.76 : 208,853 = 87,717.46 : x
  2. Step 2: Convert to fraction form
    151,342.76/208,853 = 87,717.46/x
  3. Step 3: Cross multiply
    151,342.76x = 208,853 × 87,717.46
  4. Step 4: Simplify right side
    151,342.76x = 18,320,054,673.38
  5. Step 5: Solve for x
    x = 18,320,054,673.38/151,342.76
  6. Step 6: Final answer
    x = 121,050.09

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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.