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Finding the Fourth Proportional to 122,655.67, 169,249.66 and 70,981.63

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Solution

The fourth proportional to 122,655.67, 169,249.66 and 70,981.63 is: 97,945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,655.67 : 169,249.66 = 70,981.63 : x
  2. Step 2: Convert to fraction form
    122,655.67/169,249.66 = 70,981.63/x
  3. Step 3: Cross multiply
    122,655.67x = 169,249.66 × 70,981.63
  4. Step 4: Simplify right side
    122,655.67x = 12,013,616,743.75
  5. Step 5: Solve for x
    x = 12,013,616,743.75/122,655.67
  6. Step 6: Final answer
    x = 97,945.87

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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.