Home / 129,513.58-193,911.65-66,197.35

Finding the Fourth Proportional to 129,513.58, 193,911.65 and 66,197.35

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Solution

The fourth proportional to 129,513.58, 193,911.65 and 66,197.35 is: 99,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,513.58 : 193,911.65 = 66,197.35 : x
  2. Step 2: Convert to fraction form
    129,513.58/193,911.65 = 66,197.35/x
  3. Step 3: Cross multiply
    129,513.58x = 193,911.65 × 66,197.35
  4. Step 4: Simplify right side
    129,513.58x = 12,836,437,523.77
  5. Step 5: Solve for x
    x = 12,836,437,523.77/129,513.58
  6. Step 6: Final answer
    x = 99,112.68

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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.