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Finding the Fourth Proportional to 123,181.68, 169,987.20 and 69,466.16

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Solution

The fourth proportional to 123,181.68, 169,987.20 and 69,466.16 is: 95,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,181.68 : 169,987.20 = 69,466.16 : x
  2. Step 2: Convert to fraction form
    123,181.68/169,987.20 = 69,466.16/x
  3. Step 3: Cross multiply
    123,181.68x = 169,987.20 × 69,466.16
  4. Step 4: Simplify right side
    123,181.68x = 11,808,358,033.15
  5. Step 5: Solve for x
    x = 11,808,358,033.15/123,181.68
  6. Step 6: Final answer
    x = 95,861.32

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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.