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Finding the Fourth Proportional to 112,808.40, 169,212.60 and 105,896.40

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Solution

The fourth proportional to 112,808.40, 169,212.60 and 105,896.40 is: 158,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,808.40 : 169,212.60 = 105,896.40 : x
  2. Step 2: Convert to fraction form
    112,808.40/169,212.60 = 105,896.40/x
  3. Step 3: Cross multiply
    112,808.40x = 169,212.60 × 105,896.40
  4. Step 4: Simplify right side
    112,808.40x = 17,919,005,174.64
  5. Step 5: Solve for x
    x = 17,919,005,174.64/112,808.40
  6. Step 6: Final answer
    x = 158,844.60

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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.