Home / 140,171.84-193,440.80-76,515.52

Finding the Fourth Proportional to 140,171.84, 193,440.80 and 76,515.52

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Solution

The fourth proportional to 140,171.84, 193,440.80 and 76,515.52 is: 105,593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,171.84 : 193,440.80 = 76,515.52 : x
  2. Step 2: Convert to fraction form
    140,171.84/193,440.80 = 76,515.52/x
  3. Step 3: Cross multiply
    140,171.84x = 193,440.80 × 76,515.52
  4. Step 4: Simplify right side
    140,171.84x = 14,801,223,401.22
  5. Step 5: Solve for x
    x = 14,801,223,401.22/140,171.84
  6. Step 6: Final answer
    x = 105,593.42

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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.