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Finding the Fourth Proportional to 123,853.32, 170,919.54 and 70,136.88

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Solution

The fourth proportional to 123,853.32, 170,919.54 and 70,136.88 is: 96,790.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,853.32 : 170,919.54 = 70,136.88 : x
  2. Step 2: Convert to fraction form
    123,853.32/170,919.54 = 70,136.88/x
  3. Step 3: Cross multiply
    123,853.32x = 170,919.54 × 70,136.88
  4. Step 4: Simplify right side
    123,853.32x = 11,987,763,266.64
  5. Step 5: Solve for x
    x = 11,987,763,266.64/123,853.32
  6. Step 6: Final answer
    x = 96,790.00

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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.