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Finding the Fourth Proportional to 144,464.55, 216,554.65 and 84,416.82

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Solution

The fourth proportional to 144,464.55, 216,554.65 and 84,416.82 is: 126,542.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,464.55 : 216,554.65 = 84,416.82 : x
  2. Step 2: Convert to fraction form
    144,464.55/216,554.65 = 84,416.82/x
  3. Step 3: Cross multiply
    144,464.55x = 216,554.65 × 84,416.82
  4. Step 4: Simplify right side
    144,464.55x = 18,280,853,886.09
  5. Step 5: Solve for x
    x = 18,280,853,886.09/144,464.55
  6. Step 6: Final answer
    x = 126,542.15

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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.