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Finding the Fourth Proportional to 91,805.36, 125,866.26 and 90,146.48

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Solution

The fourth proportional to 91,805.36, 125,866.26 and 90,146.48 is: 123,591.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,805.36 : 125,866.26 = 90,146.48 : x
  2. Step 2: Convert to fraction form
    91,805.36/125,866.26 = 90,146.48/x
  3. Step 3: Cross multiply
    91,805.36x = 125,866.26 × 90,146.48
  4. Step 4: Simplify right side
    91,805.36x = 11,346,400,289.76
  5. Step 5: Solve for x
    x = 11,346,400,289.76/91,805.36
  6. Step 6: Final answer
    x = 123,591.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.