Home / 105,109.25-145,053.84-57,365.66

Finding the Fourth Proportional to 105,109.25, 145,053.84 and 57,365.66

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Solution

The fourth proportional to 105,109.25, 145,053.84 and 57,365.66 is: 79,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,109.25 : 145,053.84 = 57,365.66 : x
  2. Step 2: Convert to fraction form
    105,109.25/145,053.84 = 57,365.66/x
  3. Step 3: Cross multiply
    105,109.25x = 145,053.84 × 57,365.66
  4. Step 4: Simplify right side
    105,109.25x = 8,321,109,267.13
  5. Step 5: Solve for x
    x = 8,321,109,267.13/105,109.25
  6. Step 6: Final answer
    x = 79,166.29

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1.5x scale

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.