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Finding the Fourth Proportional to 100,519.93, 151,485.85 and 90,537.19

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Solution

The fourth proportional to 100,519.93, 151,485.85 and 90,537.19 is: 136,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,519.93 : 151,485.85 = 90,537.19 : x
  2. Step 2: Convert to fraction form
    100,519.93/151,485.85 = 90,537.19/x
  3. Step 3: Cross multiply
    100,519.93x = 151,485.85 × 90,537.19
  4. Step 4: Simplify right side
    100,519.93x = 13,715,102,426.33
  5. Step 5: Solve for x
    x = 13,715,102,426.33/100,519.93
  6. Step 6: Final answer
    x = 136,441.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.