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Finding the Fourth Proportional to 75,222.87, 112,161.79 and 73,156.15

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Solution

The fourth proportional to 75,222.87, 112,161.79 and 73,156.15 is: 109,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,222.87 : 112,161.79 = 73,156.15 : x
  2. Step 2: Convert to fraction form
    75,222.87/112,161.79 = 73,156.15/x
  3. Step 3: Cross multiply
    75,222.87x = 112,161.79 × 73,156.15
  4. Step 4: Simplify right side
    75,222.87x = 8,205,324,733.51
  5. Step 5: Solve for x
    x = 8,205,324,733.51/75,222.87
  6. Step 6: Final answer
    x = 109,080.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.