Home / 106,990.29-147,800.40-85,451.76

Finding the Fourth Proportional to 106,990.29, 147,800.40 and 85,451.76

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Solution

The fourth proportional to 106,990.29, 147,800.40 and 85,451.76 is: 118,046.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,990.29 : 147,800.40 = 85,451.76 : x
  2. Step 2: Convert to fraction form
    106,990.29/147,800.40 = 85,451.76/x
  3. Step 3: Cross multiply
    106,990.29x = 147,800.40 × 85,451.76
  4. Step 4: Simplify right side
    106,990.29x = 12,629,804,308.70
  5. Step 5: Solve for x
    x = 12,629,804,308.70/106,990.29
  6. Step 6: Final answer
    x = 118,046.26

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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.