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Finding the Fourth Proportional to 112,003.80, 167,811.30 and 105,005.40

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Solution

The fourth proportional to 112,003.80, 167,811.30 and 105,005.40 is: 157,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,003.80 : 167,811.30 = 105,005.40 : x
  2. Step 2: Convert to fraction form
    112,003.80/167,811.30 = 105,005.40/x
  3. Step 3: Cross multiply
    112,003.80x = 167,811.30 × 105,005.40
  4. Step 4: Simplify right side
    112,003.80x = 17,621,092,681.02
  5. Step 5: Solve for x
    x = 17,621,092,681.02/112,003.80
  6. Step 6: Final answer
    x = 157,325.85

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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.