Home / 102,122.07-140,928.57-56,798.97

Finding the Fourth Proportional to 102,122.07, 140,928.57 and 56,798.97

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Solution

The fourth proportional to 102,122.07, 140,928.57 and 56,798.97 is: 78,382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,122.07 : 140,928.57 = 56,798.97 : x
  2. Step 2: Convert to fraction form
    102,122.07/140,928.57 = 56,798.97/x
  3. Step 3: Cross multiply
    102,122.07x = 140,928.57 × 56,798.97
  4. Step 4: Simplify right side
    102,122.07x = 8,004,597,619.57
  5. Step 5: Solve for x
    x = 8,004,597,619.57/102,122.07
  6. Step 6: Final answer
    x = 78,382.64

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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.