Home / 105,109.54-145,051.60-57,363.90

Finding the Fourth Proportional to 105,109.54, 145,051.60 and 57,363.90

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Solution

The fourth proportional to 105,109.54, 145,051.60 and 57,363.90 is: 79,162.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,109.54 : 145,051.60 = 57,363.90 : x
  2. Step 2: Convert to fraction form
    105,109.54/145,051.60 = 57,363.90/x
  3. Step 3: Cross multiply
    105,109.54x = 145,051.60 × 57,363.90
  4. Step 4: Simplify right side
    105,109.54x = 8,320,725,477.24
  5. Step 5: Solve for x
    x = 8,320,725,477.24/105,109.54
  6. Step 6: Final answer
    x = 79,162.42

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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.