Home / 121,875.27-168,196.47-68,165.28

Finding the Fourth Proportional to 121,875.27, 168,196.47 and 68,165.28

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Solution

The fourth proportional to 121,875.27, 168,196.47 and 68,165.28 is: 94,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,875.27 : 168,196.47 = 68,165.28 : x
  2. Step 2: Convert to fraction form
    121,875.27/168,196.47 = 68,165.28/x
  3. Step 3: Cross multiply
    121,875.27x = 168,196.47 × 68,165.28
  4. Step 4: Simplify right side
    121,875.27x = 11,465,159,216.94
  5. Step 5: Solve for x
    x = 11,465,159,216.94/121,875.27
  6. Step 6: Final answer
    x = 94,072.90

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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.