Home / 154,921.75-213,792.02-87,853.75

Finding the Fourth Proportional to 154,921.75, 213,792.02 and 87,853.75

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Solution

The fourth proportional to 154,921.75, 213,792.02 and 87,853.75 is: 121,238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,921.75 : 213,792.02 = 87,853.75 : x
  2. Step 2: Convert to fraction form
    154,921.75/213,792.02 = 87,853.75/x
  3. Step 3: Cross multiply
    154,921.75x = 213,792.02 × 87,853.75
  4. Step 4: Simplify right side
    154,921.75x = 18,782,430,677.08
  5. Step 5: Solve for x
    x = 18,782,430,677.08/154,921.75
  6. Step 6: Final answer
    x = 121,238.18

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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.