Home / 100,455.38-151,284.63-91,487.33

Finding the Fourth Proportional to 100,455.38, 151,284.63 and 91,487.33

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Solution

The fourth proportional to 100,455.38, 151,284.63 and 91,487.33 is: 137,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,455.38 : 151,284.63 = 91,487.33 : x
  2. Step 2: Convert to fraction form
    100,455.38/151,284.63 = 91,487.33/x
  3. Step 3: Cross multiply
    100,455.38x = 151,284.63 × 91,487.33
  4. Step 4: Simplify right side
    100,455.38x = 13,840,626,868.74
  5. Step 5: Solve for x
    x = 13,840,626,868.74/100,455.38
  6. Step 6: Final answer
    x = 137,778.85

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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.