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Finding the Fourth Proportional to 139,192.86, 192,086.65 and 75,530.65

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Solution

The fourth proportional to 139,192.86, 192,086.65 and 75,530.65 is: 104,232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,192.86 : 192,086.65 = 75,530.65 : x
  2. Step 2: Convert to fraction form
    139,192.86/192,086.65 = 75,530.65/x
  3. Step 3: Cross multiply
    139,192.86x = 192,086.65 × 75,530.65
  4. Step 4: Simplify right side
    139,192.86x = 14,508,429,530.82
  5. Step 5: Solve for x
    x = 14,508,429,530.82/139,192.86
  6. Step 6: Final answer
    x = 104,232.57

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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.