Home / 139,861.76-193,008.16-76,199.36

Finding the Fourth Proportional to 139,861.76, 193,008.16 and 76,199.36

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Solution

The fourth proportional to 139,861.76, 193,008.16 and 76,199.36 is: 105,154.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,861.76 : 193,008.16 = 76,199.36 : x
  2. Step 2: Convert to fraction form
    139,861.76/193,008.16 = 76,199.36/x
  3. Step 3: Cross multiply
    139,861.76x = 193,008.16 × 76,199.36
  4. Step 4: Simplify right side
    139,861.76x = 14,707,098,266.78
  5. Step 5: Solve for x
    x = 14,707,098,266.78/139,861.76
  6. Step 6: Final answer
    x = 105,154.53

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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.