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Finding the Fourth Proportional to 139,332.54, 192,277.14 and 75,670.76

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Solution

The fourth proportional to 139,332.54, 192,277.14 and 75,670.76 is: 104,424.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,332.54 : 192,277.14 = 75,670.76 : x
  2. Step 2: Convert to fraction form
    139,332.54/192,277.14 = 75,670.76/x
  3. Step 3: Cross multiply
    139,332.54x = 192,277.14 × 75,670.76
  4. Step 4: Simplify right side
    139,332.54x = 14,549,757,314.43
  5. Step 5: Solve for x
    x = 14,549,757,314.43/139,332.54
  6. Step 6: Final answer
    x = 104,424.69

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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.