Home / 140,066.28-193,228.90-86,331.68

Finding the Fourth Proportional to 140,066.28, 193,228.90 and 86,331.68

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Solution

The fourth proportional to 140,066.28, 193,228.90 and 86,331.68 is: 119,099.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,066.28 : 193,228.90 = 86,331.68 : x
  2. Step 2: Convert to fraction form
    140,066.28/193,228.90 = 86,331.68/x
  3. Step 3: Cross multiply
    140,066.28x = 193,228.90 × 86,331.68
  4. Step 4: Simplify right side
    140,066.28x = 16,681,775,561.55
  5. Step 5: Solve for x
    x = 16,681,775,561.55/140,066.28
  6. Step 6: Final answer
    x = 119,099.15

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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.