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Finding the Fourth Proportional to 144,893.88, 217,488.36 and 99,918.12

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Solution

The fourth proportional to 144,893.88, 217,488.36 and 99,918.12 is: 149,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,893.88 : 217,488.36 = 99,918.12 : x
  2. Step 2: Convert to fraction form
    144,893.88/217,488.36 = 99,918.12/x
  3. Step 3: Cross multiply
    144,893.88x = 217,488.36 × 99,918.12
  4. Step 4: Simplify right side
    144,893.88x = 21,731,028,053.08
  5. Step 5: Solve for x
    x = 21,731,028,053.08/144,893.88
  6. Step 6: Final answer
    x = 149,978.92

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1.5x scale

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.