Home / 151,579.93-209,178.15-87,928.51

Finding the Fourth Proportional to 151,579.93, 209,178.15 and 87,928.51

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Solution

The fourth proportional to 151,579.93, 209,178.15 and 87,928.51 is: 121,340.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,579.93 : 209,178.15 = 87,928.51 : x
  2. Step 2: Convert to fraction form
    151,579.93/209,178.15 = 87,928.51/x
  3. Step 3: Cross multiply
    151,579.93x = 209,178.15 × 87,928.51
  4. Step 4: Simplify right side
    151,579.93x = 18,392,723,054.06
  5. Step 5: Solve for x
    x = 18,392,723,054.06/151,579.93
  6. Step 6: Final answer
    x = 121,340.09

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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.