Home / 109,085.72-163,530.08-75,821.44

Finding the Fourth Proportional to 109,085.72, 163,530.08 and 75,821.44

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Solution

The fourth proportional to 109,085.72, 163,530.08 and 75,821.44 is: 113,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,085.72 : 163,530.08 = 75,821.44 : x
  2. Step 2: Convert to fraction form
    109,085.72/163,530.08 = 75,821.44/x
  3. Step 3: Cross multiply
    109,085.72x = 163,530.08 × 75,821.44
  4. Step 4: Simplify right side
    109,085.72x = 12,399,086,148.92
  5. Step 5: Solve for x
    x = 12,399,086,148.92/109,085.72
  6. Step 6: Final answer
    x = 113,663.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.