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Finding the Fourth Proportional to 123,018.60, 169,764.87 and 69,320.91

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Solution

The fourth proportional to 123,018.60, 169,764.87 and 69,320.91 is: 95,662.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,018.60 : 169,764.87 = 69,320.91 : x
  2. Step 2: Convert to fraction form
    123,018.60/169,764.87 = 69,320.91/x
  3. Step 3: Cross multiply
    123,018.60x = 169,764.87 × 69,320.91
  4. Step 4: Simplify right side
    123,018.60x = 11,768,255,274.43
  5. Step 5: Solve for x
    x = 11,768,255,274.43/123,018.60
  6. Step 6: Final answer
    x = 95,662.41

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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.