Home / 159,449.18-220,041.50-87,831

Finding the Fourth Proportional to 159,449.18, 220,041.50 and 87,831

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Solution

The fourth proportional to 159,449.18, 220,041.50 and 87,831 is: 121,207.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,449.18 : 220,041.50 = 87,831 : x
  2. Step 2: Convert to fraction form
    159,449.18/220,041.50 = 87,831/x
  3. Step 3: Cross multiply
    159,449.18x = 220,041.50 × 87,831
  4. Step 4: Simplify right side
    159,449.18x = 19,326,464,547.35
  5. Step 5: Solve for x
    x = 19,326,464,547.35/159,449.18
  6. Step 6: Final answer
    x = 121,207.68

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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.