Home / 123,345.29-170,214.65-68,898.21

Finding the Fourth Proportional to 123,345.29, 170,214.65 and 68,898.21

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Solution

The fourth proportional to 123,345.29, 170,214.65 and 68,898.21 is: 95,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,345.29 : 170,214.65 = 68,898.21 : x
  2. Step 2: Convert to fraction form
    123,345.29/170,214.65 = 68,898.21/x
  3. Step 3: Cross multiply
    123,345.29x = 170,214.65 × 68,898.21
  4. Step 4: Simplify right side
    123,345.29x = 11,727,483,976.35
  5. Step 5: Solve for x
    x = 11,727,483,976.35/123,345.29
  6. Step 6: Final answer
    x = 95,078.49

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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.