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Finding the Fourth Proportional to 143,281.80, 214,922.70 and 92,762.10

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Solution

The fourth proportional to 143,281.80, 214,922.70 and 92,762.10 is: 139,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,281.80 : 214,922.70 = 92,762.10 : x
  2. Step 2: Convert to fraction form
    143,281.80/214,922.70 = 92,762.10/x
  3. Step 3: Cross multiply
    143,281.80x = 214,922.70 × 92,762.10
  4. Step 4: Simplify right side
    143,281.80x = 19,936,680,989.67
  5. Step 5: Solve for x
    x = 19,936,680,989.67/143,281.80
  6. Step 6: Final answer
    x = 139,143.15

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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.