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Finding the Fourth Proportional to 144,291.61, 199,118.60 and 80,629.93

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Solution

The fourth proportional to 144,291.61, 199,118.60 and 80,629.93 is: 111,267.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,291.61 : 199,118.60 = 80,629.93 : x
  2. Step 2: Convert to fraction form
    144,291.61/199,118.60 = 80,629.93/x
  3. Step 3: Cross multiply
    144,291.61x = 199,118.60 × 80,629.93
  4. Step 4: Simplify right side
    144,291.61x = 16,054,918,779.70
  5. Step 5: Solve for x
    x = 16,054,918,779.70/144,291.61
  6. Step 6: Final answer
    x = 111,267.17

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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.