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Finding the Fourth Proportional to 104,860.65, 144,709.43 and 57,114.93

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Solution

The fourth proportional to 104,860.65, 144,709.43 and 57,114.93 is: 78,819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,860.65 : 144,709.43 = 57,114.93 : x
  2. Step 2: Convert to fraction form
    104,860.65/144,709.43 = 57,114.93/x
  3. Step 3: Cross multiply
    104,860.65x = 144,709.43 × 57,114.93
  4. Step 4: Simplify right side
    104,860.65x = 8,265,068,964.79
  5. Step 5: Solve for x
    x = 8,265,068,964.79/104,860.65
  6. Step 6: Final answer
    x = 78,819.55

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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.