Home / 159,520.93-220,143.51-87,905.57

Finding the Fourth Proportional to 159,520.93, 220,143.51 and 87,905.57

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Solution

The fourth proportional to 159,520.93, 220,143.51 and 87,905.57 is: 121,312.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,520.93 : 220,143.51 = 87,905.57 : x
  2. Step 2: Convert to fraction form
    159,520.93/220,143.51 = 87,905.57/x
  3. Step 3: Cross multiply
    159,520.93x = 220,143.51 × 87,905.57
  4. Step 4: Simplify right side
    159,520.93x = 19,351,839,627.63
  5. Step 5: Solve for x
    x = 19,351,839,627.63/159,520.93
  6. Step 6: Final answer
    x = 121,312.23

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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.