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Finding the Fourth Proportional to 139,710.48, 192,800.48 and 76,048.71

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Solution

The fourth proportional to 139,710.48, 192,800.48 and 76,048.71 is: 104,947.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,710.48 : 192,800.48 = 76,048.71 : x
  2. Step 2: Convert to fraction form
    139,710.48/192,800.48 = 76,048.71/x
  3. Step 3: Cross multiply
    139,710.48x = 192,800.48 × 76,048.71
  4. Step 4: Simplify right side
    139,710.48x = 14,662,227,411.14
  5. Step 5: Solve for x
    x = 14,662,227,411.14/139,710.48
  6. Step 6: Final answer
    x = 104,947.23

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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.