Home / 124,074.81-171,131.49-78,713.64

Finding the Fourth Proportional to 124,074.81, 171,131.49 and 78,713.64

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Solution

The fourth proportional to 124,074.81, 171,131.49 and 78,713.64 is: 108,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,074.81 : 171,131.49 = 78,713.64 : x
  2. Step 2: Convert to fraction form
    124,074.81/171,131.49 = 78,713.64/x
  3. Step 3: Cross multiply
    124,074.81x = 171,131.49 × 78,713.64
  4. Step 4: Simplify right side
    124,074.81x = 13,470,382,496.52
  5. Step 5: Solve for x
    x = 13,470,382,496.52/124,074.81
  6. Step 6: Final answer
    x = 108,566.62

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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.