Home / 151,363.12-208,871.94-87,689.92

Finding the Fourth Proportional to 151,363.12, 208,871.94 and 87,689.92

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Solution

The fourth proportional to 151,363.12, 208,871.94 and 87,689.92 is: 121,006.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,363.12 : 208,871.94 = 87,689.92 : x
  2. Step 2: Convert to fraction form
    151,363.12/208,871.94 = 87,689.92/x
  3. Step 3: Cross multiply
    151,363.12x = 208,871.94 × 87,689.92
  4. Step 4: Simplify right side
    151,363.12x = 18,315,963,708.84
  5. Step 5: Solve for x
    x = 18,315,963,708.84/151,363.12
  6. Step 6: Final answer
    x = 121,006.78

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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.