Home / 243,426.78-365,103.23-85,618.35

Finding the Fourth Proportional to 243,426.78, 365,103.23 and 85,618.35

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Solution

The fourth proportional to 243,426.78, 365,103.23 and 85,618.35 is: 128,414.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,426.78 : 365,103.23 = 85,618.35 : x
  2. Step 2: Convert to fraction form
    243,426.78/365,103.23 = 85,618.35/x
  3. Step 3: Cross multiply
    243,426.78x = 365,103.23 × 85,618.35
  4. Step 4: Simplify right side
    243,426.78x = 31,259,535,704.18
  5. Step 5: Solve for x
    x = 31,259,535,704.18/243,426.78
  6. Step 6: Final answer
    x = 128,414.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.