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Finding the Fourth Proportional to 123,993.48, 171,107.40 and 70,283.44

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Solution

The fourth proportional to 123,993.48, 171,107.40 and 70,283.44 is: 96,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,993.48 : 171,107.40 = 70,283.44 : x
  2. Step 2: Convert to fraction form
    123,993.48/171,107.40 = 70,283.44/x
  3. Step 3: Cross multiply
    123,993.48x = 171,107.40 × 70,283.44
  4. Step 4: Simplify right side
    123,993.48x = 12,026,016,681.46
  5. Step 5: Solve for x
    x = 12,026,016,681.46/123,993.48
  6. Step 6: Final answer
    x = 96,989.11

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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.