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Finding the Fourth Proportional to 139,330.53, 192,274.38 and 75,668.76

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Solution

The fourth proportional to 139,330.53, 192,274.38 and 75,668.76 is: 104,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,330.53 : 192,274.38 = 75,668.76 : x
  2. Step 2: Convert to fraction form
    139,330.53/192,274.38 = 75,668.76/x
  3. Step 3: Cross multiply
    139,330.53x = 192,274.38 × 75,668.76
  4. Step 4: Simplify right side
    139,330.53x = 14,549,163,914.37
  5. Step 5: Solve for x
    x = 14,549,163,914.37/139,330.53
  6. Step 6: Final answer
    x = 104,421.94

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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.