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Finding the Fourth Proportional to 123,919.32, 171,009.08 and 70,214.28

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Solution

The fourth proportional to 123,919.32, 171,009.08 and 70,214.28 is: 96,895.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,919.32 : 171,009.08 = 70,214.28 : x
  2. Step 2: Convert to fraction form
    123,919.32/171,009.08 = 70,214.28/x
  3. Step 3: Cross multiply
    123,919.32x = 171,009.08 × 70,214.28
  4. Step 4: Simplify right side
    123,919.32x = 12,007,279,425.66
  5. Step 5: Solve for x
    x = 12,007,279,425.66/123,919.32
  6. Step 6: Final answer
    x = 96,895.94

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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.