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Finding the Fourth Proportional to 191,952.80, 288,058.80 and 107,712.80

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Solution

The fourth proportional to 191,952.80, 288,058.80 and 107,712.80 is: 161,641.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,952.80 : 288,058.80 = 107,712.80 : x
  2. Step 2: Convert to fraction form
    191,952.80/288,058.80 = 107,712.80/x
  3. Step 3: Cross multiply
    191,952.80x = 288,058.80 × 107,712.80
  4. Step 4: Simplify right side
    191,952.80x = 31,027,619,912.64
  5. Step 5: Solve for x
    x = 31,027,619,912.64/191,952.80
  6. Step 6: Final answer
    x = 161,641.92

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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.