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Finding the Fourth Proportional to 139,500.82, 192,502.95 and 75,838.06

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Solution

The fourth proportional to 139,500.82, 192,502.95 and 75,838.06 is: 104,652.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,500.82 : 192,502.95 = 75,838.06 : x
  2. Step 2: Convert to fraction form
    139,500.82/192,502.95 = 75,838.06/x
  3. Step 3: Cross multiply
    139,500.82x = 192,502.95 × 75,838.06
  4. Step 4: Simplify right side
    139,500.82x = 14,599,050,272.28
  5. Step 5: Solve for x
    x = 14,599,050,272.28/139,500.82
  6. Step 6: Final answer
    x = 104,652.07

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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.