Home / 105,390.12-145,443.69-62,394.30

Finding the Fourth Proportional to 105,390.12, 145,443.69 and 62,394.30

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Solution

The fourth proportional to 105,390.12, 145,443.69 and 62,394.30 is: 86,107.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,390.12 : 145,443.69 = 62,394.30 : x
  2. Step 2: Convert to fraction form
    105,390.12/145,443.69 = 62,394.30/x
  3. Step 3: Cross multiply
    105,390.12x = 145,443.69 × 62,394.30
  4. Step 4: Simplify right side
    105,390.12x = 9,074,857,226.97
  5. Step 5: Solve for x
    x = 9,074,857,226.97/105,390.12
  6. Step 6: Final answer
    x = 86,107.29

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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.