Home / 139,948.87-193,131.45-76,286.67

Finding the Fourth Proportional to 139,948.87, 193,131.45 and 76,286.67

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Solution

The fourth proportional to 139,948.87, 193,131.45 and 76,286.67 is: 105,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,948.87 : 193,131.45 = 76,286.67 : x
  2. Step 2: Convert to fraction form
    139,948.87/193,131.45 = 76,286.67/x
  3. Step 3: Cross multiply
    139,948.87x = 193,131.45 × 76,286.67
  4. Step 4: Simplify right side
    139,948.87x = 14,733,355,192.77
  5. Step 5: Solve for x
    x = 14,733,355,192.77/139,948.87
  6. Step 6: Final answer
    x = 105,276.70

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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.