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Finding the Fourth Proportional to 112,062.62, 168,147.36 and 69,931.28

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Solution

The fourth proportional to 112,062.62, 168,147.36 and 69,931.28 is: 104,930.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,062.62 : 168,147.36 = 69,931.28 : x
  2. Step 2: Convert to fraction form
    112,062.62/168,147.36 = 69,931.28/x
  3. Step 3: Cross multiply
    112,062.62x = 168,147.36 × 69,931.28
  4. Step 4: Simplify right side
    112,062.62x = 11,758,760,113.42
  5. Step 5: Solve for x
    x = 11,758,760,113.42/112,062.62
  6. Step 6: Final answer
    x = 104,930.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.