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Finding the Fourth Proportional to 134,762.87, 185,969.49 and 74,332.20

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Solution

The fourth proportional to 134,762.87, 185,969.49 and 74,332.20 is: 102,576.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,762.87 : 185,969.49 = 74,332.20 : x
  2. Step 2: Convert to fraction form
    134,762.87/185,969.49 = 74,332.20/x
  3. Step 3: Cross multiply
    134,762.87x = 185,969.49 × 74,332.20
  4. Step 4: Simplify right side
    134,762.87x = 13,823,521,324.58
  5. Step 5: Solve for x
    x = 13,823,521,324.58/134,762.87
  6. Step 6: Final answer
    x = 102,576.64

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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.