Home / 121,971.93-168,328.30-68,256.47

Finding the Fourth Proportional to 121,971.93, 168,328.30 and 68,256.47

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Solution

The fourth proportional to 121,971.93, 168,328.30 and 68,256.47 is: 94,197.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,971.93 : 168,328.30 = 68,256.47 : x
  2. Step 2: Convert to fraction form
    121,971.93/168,328.30 = 68,256.47/x
  3. Step 3: Cross multiply
    121,971.93x = 168,328.30 × 68,256.47
  4. Step 4: Simplify right side
    121,971.93x = 11,489,494,717.46
  5. Step 5: Solve for x
    x = 11,489,494,717.46/121,971.93
  6. Step 6: Final answer
    x = 94,197.86

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1.5x scale

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.