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Finding the Fourth Proportional to 139,501.32, 192,503.64 and 75,838.56

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Solution

The fourth proportional to 139,501.32, 192,503.64 and 75,838.56 is: 104,652.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,501.32 : 192,503.64 = 75,838.56 : x
  2. Step 2: Convert to fraction form
    139,501.32/192,503.64 = 75,838.56/x
  3. Step 3: Cross multiply
    139,501.32x = 192,503.64 × 75,838.56
  4. Step 4: Simplify right side
    139,501.32x = 14,599,198,852.36
  5. Step 5: Solve for x
    x = 14,599,198,852.36/139,501.32
  6. Step 6: Final answer
    x = 104,652.76

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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.