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Finding the Fourth Proportional to 223,761.91, 308,793.95 and 121,788.02

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Solution

The fourth proportional to 223,761.91, 308,793.95 and 121,788.02 is: 168,068.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,761.91 : 308,793.95 = 121,788.02 : x
  2. Step 2: Convert to fraction form
    223,761.91/308,793.95 = 121,788.02/x
  3. Step 3: Cross multiply
    223,761.91x = 308,793.95 × 121,788.02
  4. Step 4: Simplify right side
    223,761.91x = 37,607,402,518.98
  5. Step 5: Solve for x
    x = 37,607,402,518.98/223,761.91
  6. Step 6: Final answer
    x = 168,068.83

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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.