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Finding the Fourth Proportional to 122,653.92, 169,247.25 and 70,979.88

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Solution

The fourth proportional to 122,653.92, 169,247.25 and 70,979.88 is: 97,943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,653.92 : 169,247.25 = 70,979.88 : x
  2. Step 2: Convert to fraction form
    122,653.92/169,247.25 = 70,979.88/x
  3. Step 3: Cross multiply
    122,653.92x = 169,247.25 × 70,979.88
  4. Step 4: Simplify right side
    122,653.92x = 12,013,149,495.33
  5. Step 5: Solve for x
    x = 12,013,149,495.33/122,653.92
  6. Step 6: Final answer
    x = 97,943.46

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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.