Home / 159,719.58-220,411.98-87,126.48

Finding the Fourth Proportional to 159,719.58, 220,411.98 and 87,126.48

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Solution

The fourth proportional to 159,719.58, 220,411.98 and 87,126.48 is: 120,233.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,719.58 : 220,411.98 = 87,126.48 : x
  2. Step 2: Convert to fraction form
    159,719.58/220,411.98 = 87,126.48/x
  3. Step 3: Cross multiply
    159,719.58x = 220,411.98 × 87,126.48
  4. Step 4: Simplify right side
    159,719.58x = 19,203,719,967.23
  5. Step 5: Solve for x
    x = 19,203,719,967.23/159,719.58
  6. Step 6: Final answer
    x = 120,233.97

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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.