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Finding the Fourth Proportional to 121,612.40, 169,863.70 and 121,612.40

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Solution

The fourth proportional to 121,612.40, 169,863.70 and 121,612.40 is: 169,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,612.40 : 169,863.70 = 121,612.40 : x
  2. Step 2: Convert to fraction form
    121,612.40/169,863.70 = 121,612.40/x
  3. Step 3: Cross multiply
    121,612.40x = 169,863.70 × 121,612.40
  4. Step 4: Simplify right side
    121,612.40x = 20,657,532,229.88
  5. Step 5: Solve for x
    x = 20,657,532,229.88/121,612.40
  6. Step 6: Final answer
    x = 169,863.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.