Home / 159,378.12-219,937.50-91,406.52

Finding the Fourth Proportional to 159,378.12, 219,937.50 and 91,406.52

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Solution

The fourth proportional to 159,378.12, 219,937.50 and 91,406.52 is: 126,138.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,378.12 : 219,937.50 = 91,406.52 : x
  2. Step 2: Convert to fraction form
    159,378.12/219,937.50 = 91,406.52/x
  3. Step 3: Cross multiply
    159,378.12x = 219,937.50 × 91,406.52
  4. Step 4: Simplify right side
    159,378.12x = 20,103,721,492.50
  5. Step 5: Solve for x
    x = 20,103,721,492.50/159,378.12
  6. Step 6: Final answer
    x = 126,138.53

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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.