Home / 105,291.36-145,288.08-67,616.64

Finding the Fourth Proportional to 105,291.36, 145,288.08 and 67,616.64

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Solution

The fourth proportional to 105,291.36, 145,288.08 and 67,616.64 is: 93,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,291.36 : 145,288.08 = 67,616.64 : x
  2. Step 2: Convert to fraction form
    105,291.36/145,288.08 = 67,616.64/x
  3. Step 3: Cross multiply
    105,291.36x = 145,288.08 × 67,616.64
  4. Step 4: Simplify right side
    105,291.36x = 9,823,891,801.65
  5. Step 5: Solve for x
    x = 9,823,891,801.65/105,291.36
  6. Step 6: Final answer
    x = 93,301.97

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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.