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Finding the Fourth Proportional to 123,360.34, 170,240.60 and 74,945.80

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Solution

The fourth proportional to 123,360.34, 170,240.60 and 74,945.80 is: 103,427.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,360.34 : 170,240.60 = 74,945.80 : x
  2. Step 2: Convert to fraction form
    123,360.34/170,240.60 = 74,945.80/x
  3. Step 3: Cross multiply
    123,360.34x = 170,240.60 × 74,945.80
  4. Step 4: Simplify right side
    123,360.34x = 12,758,817,959.48
  5. Step 5: Solve for x
    x = 12,758,817,959.48/123,360.34
  6. Step 6: Final answer
    x = 103,427.23

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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.