Home / 100,454.43-150,681.61-78,284.38

Finding the Fourth Proportional to 100,454.43, 150,681.61 and 78,284.38

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Solution

The fourth proportional to 100,454.43, 150,681.61 and 78,284.38 is: 117,426.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,454.43 : 150,681.61 = 78,284.38 : x
  2. Step 2: Convert to fraction form
    100,454.43/150,681.61 = 78,284.38/x
  3. Step 3: Cross multiply
    100,454.43x = 150,681.61 × 78,284.38
  4. Step 4: Simplify right side
    100,454.43x = 11,796,016,416.25
  5. Step 5: Solve for x
    x = 11,796,016,416.25/100,454.43
  6. Step 6: Final answer
    x = 117,426.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.