Home / 230,823.71-318,552.83-128,869.20

Finding the Fourth Proportional to 230,823.71, 318,552.83 and 128,869.20

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Solution

The fourth proportional to 230,823.71, 318,552.83 and 128,869.20 is: 177,848.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,823.71 : 318,552.83 = 128,869.20 : x
  2. Step 2: Convert to fraction form
    230,823.71/318,552.83 = 128,869.20/x
  3. Step 3: Cross multiply
    230,823.71x = 318,552.83 × 128,869.20
  4. Step 4: Simplify right side
    230,823.71x = 41,051,647,715.49
  5. Step 5: Solve for x
    x = 41,051,647,715.49/230,823.71
  6. Step 6: Final answer
    x = 177,848.49

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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.