Home / 230,708.32-318,377.05-128,727.63

Finding the Fourth Proportional to 230,708.32, 318,377.05 and 128,727.63

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Solution

The fourth proportional to 230,708.32, 318,377.05 and 128,727.63 is: 177,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,708.32 : 318,377.05 = 128,727.63 : x
  2. Step 2: Convert to fraction form
    230,708.32/318,377.05 = 128,727.63/x
  3. Step 3: Cross multiply
    230,708.32x = 318,377.05 × 128,727.63
  4. Step 4: Simplify right side
    230,708.32x = 40,983,922,771.07
  5. Step 5: Solve for x
    x = 40,983,922,771.07/230,708.32
  6. Step 6: Final answer
    x = 177,643.89

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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.