Home / 129,037.80-193,556.70-99,513.30

Finding the Fourth Proportional to 129,037.80, 193,556.70 and 99,513.30

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Solution

The fourth proportional to 129,037.80, 193,556.70 and 99,513.30 is: 149,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,037.80 : 193,556.70 = 99,513.30 : x
  2. Step 2: Convert to fraction form
    129,037.80/193,556.70 = 99,513.30/x
  3. Step 3: Cross multiply
    129,037.80x = 193,556.70 × 99,513.30
  4. Step 4: Simplify right side
    129,037.80x = 19,261,465,954.11
  5. Step 5: Solve for x
    x = 19,261,465,954.11/129,037.80
  6. Step 6: Final answer
    x = 149,269.95

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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.