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Finding the Fourth Proportional to 155,443.80, 214,477.62 and 91,747.44

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Solution

The fourth proportional to 155,443.80, 214,477.62 and 91,747.44 is: 126,590.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,443.80 : 214,477.62 = 91,747.44 : x
  2. Step 2: Convert to fraction form
    155,443.80/214,477.62 = 91,747.44/x
  3. Step 3: Cross multiply
    155,443.80x = 214,477.62 × 91,747.44
  4. Step 4: Simplify right side
    155,443.80x = 19,677,772,572.29
  5. Step 5: Solve for x
    x = 19,677,772,572.29/155,443.80
  6. Step 6: Final answer
    x = 126,590.91

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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.