Home / 109,225.26-163,721.25-77,965.74

Finding the Fourth Proportional to 109,225.26, 163,721.25 and 77,965.74

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Solution

The fourth proportional to 109,225.26, 163,721.25 and 77,965.74 is: 116,865.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,225.26 : 163,721.25 = 77,965.74 : x
  2. Step 2: Convert to fraction form
    109,225.26/163,721.25 = 77,965.74/x
  3. Step 3: Cross multiply
    109,225.26x = 163,721.25 × 77,965.74
  4. Step 4: Simplify right side
    109,225.26x = 12,764,648,409.98
  5. Step 5: Solve for x
    x = 12,764,648,409.98/109,225.26
  6. Step 6: Final answer
    x = 116,865.35

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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.