Home / 109,110.06-150,578.10-72,748.80

Finding the Fourth Proportional to 109,110.06, 150,578.10 and 72,748.80

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Solution

The fourth proportional to 109,110.06, 150,578.10 and 72,748.80 is: 100,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,110.06 : 150,578.10 = 72,748.80 : x
  2. Step 2: Convert to fraction form
    109,110.06/150,578.10 = 72,748.80/x
  3. Step 3: Cross multiply
    109,110.06x = 150,578.10 × 72,748.80
  4. Step 4: Simplify right side
    109,110.06x = 10,954,376,081.28
  5. Step 5: Solve for x
    x = 10,954,376,081.28/109,110.06
  6. Step 6: Final answer
    x = 100,397.49

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1.5x scale

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.