Home / 121,837.08-168,127.38-68,126.52

Finding the Fourth Proportional to 121,837.08, 168,127.38 and 68,126.52

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Solution

The fourth proportional to 121,837.08, 168,127.38 and 68,126.52 is: 94,010.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,837.08 : 168,127.38 = 68,126.52 : x
  2. Step 2: Convert to fraction form
    121,837.08/168,127.38 = 68,126.52/x
  3. Step 3: Cross multiply
    121,837.08x = 168,127.38 × 68,126.52
  4. Step 4: Simplify right side
    121,837.08x = 11,453,933,316.12
  5. Step 5: Solve for x
    x = 11,453,933,316.12/121,837.08
  6. Step 6: Final answer
    x = 94,010.24

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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.