Home / 151,580.43-209,178.84-87,929.01

Finding the Fourth Proportional to 151,580.43, 209,178.84 and 87,929.01

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Solution

The fourth proportional to 151,580.43, 209,178.84 and 87,929.01 is: 121,340.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,580.43 : 209,178.84 = 87,929.01 : x
  2. Step 2: Convert to fraction form
    151,580.43/209,178.84 = 87,929.01/x
  3. Step 3: Cross multiply
    151,580.43x = 209,178.84 × 87,929.01
  4. Step 4: Simplify right side
    151,580.43x = 18,392,888,314.15
  5. Step 5: Solve for x
    x = 18,392,888,314.15/151,580.43
  6. Step 6: Final answer
    x = 121,340.78

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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.