Home / 105,329.40-145,356.30-62,891.64

Finding the Fourth Proportional to 105,329.40, 145,356.30 and 62,891.64

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Solution

The fourth proportional to 105,329.40, 145,356.30 and 62,891.64 is: 86,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,329.40 : 145,356.30 = 62,891.64 : x
  2. Step 2: Convert to fraction form
    105,329.40/145,356.30 = 62,891.64/x
  3. Step 3: Cross multiply
    105,329.40x = 145,356.30 × 62,891.64
  4. Step 4: Simplify right side
    105,329.40x = 9,141,696,091.33
  5. Step 5: Solve for x
    x = 9,141,696,091.33/105,329.40
  6. Step 6: Final answer
    x = 86,791.49

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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.