Home / 102,700.51-141,724.09-57,378.83

Finding the Fourth Proportional to 102,700.51, 141,724.09 and 57,378.83

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Solution

The fourth proportional to 102,700.51, 141,724.09 and 57,378.83 is: 79,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,700.51 : 141,724.09 = 57,378.83 : x
  2. Step 2: Convert to fraction form
    102,700.51/141,724.09 = 57,378.83/x
  3. Step 3: Cross multiply
    102,700.51x = 141,724.09 × 57,378.83
  4. Step 4: Simplify right side
    102,700.51x = 8,131,962,467.01
  5. Step 5: Solve for x
    x = 8,131,962,467.01/102,700.51
  6. Step 6: Final answer
    x = 79,181.33

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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.