Home / 159,811.64-220,541.35-87,215.10

Finding the Fourth Proportional to 159,811.64, 220,541.35 and 87,215.10

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Solution

The fourth proportional to 159,811.64, 220,541.35 and 87,215.10 is: 120,357.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,811.64 : 220,541.35 = 87,215.10 : x
  2. Step 2: Convert to fraction form
    159,811.64/220,541.35 = 87,215.10/x
  3. Step 3: Cross multiply
    159,811.64x = 220,541.35 × 87,215.10
  4. Step 4: Simplify right side
    159,811.64x = 19,234,536,253.39
  5. Step 5: Solve for x
    x = 19,234,536,253.39/159,811.64
  6. Step 6: Final answer
    x = 120,357.54

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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.