Home / 140,066.19-193,288.20-76,406.28

Finding the Fourth Proportional to 140,066.19, 193,288.20 and 76,406.28

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Solution

The fourth proportional to 140,066.19, 193,288.20 and 76,406.28 is: 105,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,066.19 : 193,288.20 = 76,406.28 : x
  2. Step 2: Convert to fraction form
    140,066.19/193,288.20 = 76,406.28/x
  3. Step 3: Cross multiply
    140,066.19x = 193,288.20 × 76,406.28
  4. Step 4: Simplify right side
    140,066.19x = 14,768,432,329.90
  5. Step 5: Solve for x
    x = 14,768,432,329.90/140,066.19
  6. Step 6: Final answer
    x = 105,438.95

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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.