Home / 211,976.72-318,026.93-85,552.40

Finding the Fourth Proportional to 211,976.72, 318,026.93 and 85,552.40

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Solution

The fourth proportional to 211,976.72, 318,026.93 and 85,552.40 is: 128,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,976.72 : 318,026.93 = 85,552.40 : x
  2. Step 2: Convert to fraction form
    211,976.72/318,026.93 = 85,552.40/x
  3. Step 3: Cross multiply
    211,976.72x = 318,026.93 × 85,552.40
  4. Step 4: Simplify right side
    211,976.72x = 27,207,968,215.29
  5. Step 5: Solve for x
    x = 27,207,968,215.29/211,976.72
  6. Step 6: Final answer
    x = 128,353.57

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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.