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Finding the Fourth Proportional to 145,872.77, 218,684.33 and 55,979.98

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Solution

The fourth proportional to 145,872.77, 218,684.33 and 55,979.98 is: 83,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,872.77 : 218,684.33 = 55,979.98 : x
  2. Step 2: Convert to fraction form
    145,872.77/218,684.33 = 55,979.98/x
  3. Step 3: Cross multiply
    145,872.77x = 218,684.33 × 55,979.98
  4. Step 4: Simplify right side
    145,872.77x = 12,241,944,623.09
  5. Step 5: Solve for x
    x = 12,241,944,623.09/145,872.77
  6. Step 6: Final answer
    x = 83,922.07

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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.