Home / 212,035.22-318,052.18-85,673.97

Finding the Fourth Proportional to 212,035.22, 318,052.18 and 85,673.97

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Solution

The fourth proportional to 212,035.22, 318,052.18 and 85,673.97 is: 128,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,035.22 : 318,052.18 = 85,673.97 : x
  2. Step 2: Convert to fraction form
    212,035.22/318,052.18 = 85,673.97/x
  3. Step 3: Cross multiply
    212,035.22x = 318,052.18 × 85,673.97
  4. Step 4: Simplify right side
    212,035.22x = 27,248,792,927.75
  5. Step 5: Solve for x
    x = 27,248,792,927.75/212,035.22
  6. Step 6: Final answer
    x = 128,510.69

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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.