Home / 121,875.19-168,190.07-68,166.11

Finding the Fourth Proportional to 121,875.19, 168,190.07 and 68,166.11

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Solution

The fourth proportional to 121,875.19, 168,190.07 and 68,166.11 is: 94,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,875.19 : 168,190.07 = 68,166.11 : x
  2. Step 2: Convert to fraction form
    121,875.19/168,190.07 = 68,166.11/x
  3. Step 3: Cross multiply
    121,875.19x = 168,190.07 × 68,166.11
  4. Step 4: Simplify right side
    121,875.19x = 11,464,862,892.17
  5. Step 5: Solve for x
    x = 11,464,862,892.17/121,875.19
  6. Step 6: Final answer
    x = 94,070.53

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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.