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Finding the Fourth Proportional to 90,907.87, 125,182.11 and 88,891.58

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Solution

The fourth proportional to 90,907.87, 125,182.11 and 88,891.58 is: 122,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,907.87 : 125,182.11 = 88,891.58 : x
  2. Step 2: Convert to fraction form
    90,907.87/125,182.11 = 88,891.58/x
  3. Step 3: Cross multiply
    90,907.87x = 125,182.11 × 88,891.58
  4. Step 4: Simplify right side
    90,907.87x = 11,127,634,987.77
  5. Step 5: Solve for x
    x = 11,127,634,987.77/90,907.87
  6. Step 6: Final answer
    x = 122,405.63

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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.