Home / 112,811.40-169,217.10-103,134.60

Finding the Fourth Proportional to 112,811.40, 169,217.10 and 103,134.60

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Solution

The fourth proportional to 112,811.40, 169,217.10 and 103,134.60 is: 154,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,811.40 : 169,217.10 = 103,134.60 : x
  2. Step 2: Convert to fraction form
    112,811.40/169,217.10 = 103,134.60/x
  3. Step 3: Cross multiply
    112,811.40x = 169,217.10 × 103,134.60
  4. Step 4: Simplify right side
    112,811.40x = 17,452,137,921.66
  5. Step 5: Solve for x
    x = 17,452,137,921.66/112,811.40
  6. Step 6: Final answer
    x = 154,701.90

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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.