Home / 123,201.70-170,018.25-66,612.58

Finding the Fourth Proportional to 123,201.70, 170,018.25 and 66,612.58

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Solution

The fourth proportional to 123,201.70, 170,018.25 and 66,612.58 is: 91,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,201.70 : 170,018.25 = 66,612.58 : x
  2. Step 2: Convert to fraction form
    123,201.70/170,018.25 = 66,612.58/x
  3. Step 3: Cross multiply
    123,201.70x = 170,018.25 × 66,612.58
  4. Step 4: Simplify right side
    123,201.70x = 11,325,354,279.59
  5. Step 5: Solve for x
    x = 11,325,354,279.59/123,201.70
  6. Step 6: Final answer
    x = 91,925.31

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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.