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Finding the Fourth Proportional to 155,243, 214,235.34 and 84,587

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Solution

The fourth proportional to 155,243, 214,235.34 and 84,587 is: 116,730.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,243 : 214,235.34 = 84,587 : x
  2. Step 2: Convert to fraction form
    155,243/214,235.34 = 84,587/x
  3. Step 3: Cross multiply
    155,243x = 214,235.34 × 84,587
  4. Step 4: Simplify right side
    155,243x = 18,121,524,704.58
  5. Step 5: Solve for x
    x = 18,121,524,704.58/155,243
  6. Step 6: Final answer
    x = 116,730.06

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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.