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Finding the Fourth Proportional to 121,937.64, 168,280.48 and 68,219.44

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Solution

The fourth proportional to 121,937.64, 168,280.48 and 68,219.44 is: 94,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,937.64 : 168,280.48 = 68,219.44 : x
  2. Step 2: Convert to fraction form
    121,937.64/168,280.48 = 68,219.44/x
  3. Step 3: Cross multiply
    121,937.64x = 168,280.48 × 68,219.44
  4. Step 4: Simplify right side
    121,937.64x = 11,480,000,108.53
  5. Step 5: Solve for x
    x = 11,480,000,108.53/121,937.64
  6. Step 6: Final answer
    x = 94,146.48

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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.