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Finding the Fourth Proportional to 88,357.95, 122,007.54 and 81,947.21

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Solution

The fourth proportional to 88,357.95, 122,007.54 and 81,947.21 is: 113,155.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,357.95 : 122,007.54 = 81,947.21 : x
  2. Step 2: Convert to fraction form
    88,357.95/122,007.54 = 81,947.21/x
  3. Step 3: Cross multiply
    88,357.95x = 122,007.54 × 81,947.21
  4. Step 4: Simplify right side
    88,357.95x = 9,998,176,891.93
  5. Step 5: Solve for x
    x = 9,998,176,891.93/88,357.95
  6. Step 6: Final answer
    x = 113,155.37

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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.