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Finding the Fourth Proportional to 123,303.97, 170,141.23 and 74,880.71

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Solution

The fourth proportional to 123,303.97, 170,141.23 and 74,880.71 is: 103,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,303.97 : 170,141.23 = 74,880.71 : x
  2. Step 2: Convert to fraction form
    123,303.97/170,141.23 = 74,880.71/x
  3. Step 3: Cross multiply
    123,303.97x = 170,141.23 × 74,880.71
  4. Step 4: Simplify right side
    123,303.97x = 12,740,296,621.63
  5. Step 5: Solve for x
    x = 12,740,296,621.63/123,303.97
  6. Step 6: Final answer
    x = 103,324.30

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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.