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Finding the Fourth Proportional to 104,901.78, 144,762.62 and 57,155.47

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Solution

The fourth proportional to 104,901.78, 144,762.62 and 57,155.47 is: 78,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,901.78 : 144,762.62 = 57,155.47 : x
  2. Step 2: Convert to fraction form
    104,901.78/144,762.62 = 57,155.47/x
  3. Step 3: Cross multiply
    104,901.78x = 144,762.62 × 57,155.47
  4. Step 4: Simplify right side
    104,901.78x = 8,273,975,584.53
  5. Step 5: Solve for x
    x = 8,273,975,584.53/104,901.78
  6. Step 6: Final answer
    x = 78,873.55

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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.