Home / 151,470-209,028.66-87,844.68

Finding the Fourth Proportional to 151,470, 209,028.66 and 87,844.68

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Solution

The fourth proportional to 151,470, 209,028.66 and 87,844.68 is: 121,225.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,470 : 209,028.66 = 87,844.68 : x
  2. Step 2: Convert to fraction form
    151,470/209,028.66 = 87,844.68/x
  3. Step 3: Cross multiply
    151,470x = 209,028.66 × 87,844.68
  4. Step 4: Simplify right side
    151,470x = 18,362,055,748.53
  5. Step 5: Solve for x
    x = 18,362,055,748.53/151,470
  6. Step 6: Final answer
    x = 121,225.69

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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.