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Finding the Fourth Proportional to 144,288, 216,241.92 and 61,079.04

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Solution

The fourth proportional to 144,288, 216,241.92 and 61,079.04 is: 91,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,288 : 216,241.92 = 61,079.04 : x
  2. Step 2: Convert to fraction form
    144,288/216,241.92 = 61,079.04/x
  3. Step 3: Cross multiply
    144,288x = 216,241.92 × 61,079.04
  4. Step 4: Simplify right side
    144,288x = 13,207,848,881.36
  5. Step 5: Solve for x
    x = 13,207,848,881.36/144,288
  6. Step 6: Final answer
    x = 91,538.10

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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.