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Finding the Fourth Proportional to 144,763.76, 199,779.72 and 81,102.08

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Solution

The fourth proportional to 144,763.76, 199,779.72 and 81,102.08 is: 111,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,763.76 : 199,779.72 = 81,102.08 : x
  2. Step 2: Convert to fraction form
    144,763.76/199,779.72 = 81,102.08/x
  3. Step 3: Cross multiply
    144,763.76x = 199,779.72 × 81,102.08
  4. Step 4: Simplify right side
    144,763.76x = 16,202,550,833.82
  5. Step 5: Solve for x
    x = 16,202,550,833.82/144,763.76
  6. Step 6: Final answer
    x = 111,924.08

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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.