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Finding the Fourth Proportional to 139,686.24, 192,767 and 76,024.48

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Solution

The fourth proportional to 139,686.24, 192,767 and 76,024.48 is: 104,913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,686.24 : 192,767 = 76,024.48 : x
  2. Step 2: Convert to fraction form
    139,686.24/192,767 = 76,024.48/x
  3. Step 3: Cross multiply
    139,686.24x = 192,767 × 76,024.48
  4. Step 4: Simplify right side
    139,686.24x = 14,655,010,936.16
  5. Step 5: Solve for x
    x = 14,655,010,936.16/139,686.24
  6. Step 6: Final answer
    x = 104,913.78

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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.