Home / 122,507.12-169,078.32-74,788.24

Finding the Fourth Proportional to 122,507.12, 169,078.32 and 74,788.24

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Solution

The fourth proportional to 122,507.12, 169,078.32 and 74,788.24 is: 103,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,507.12 : 169,078.32 = 74,788.24 : x
  2. Step 2: Convert to fraction form
    122,507.12/169,078.32 = 74,788.24/x
  3. Step 3: Cross multiply
    122,507.12x = 169,078.32 × 74,788.24
  4. Step 4: Simplify right side
    122,507.12x = 12,645,069,974.96
  5. Step 5: Solve for x
    x = 12,645,069,974.96/122,507.12
  6. Step 6: Final answer
    x = 103,219.06

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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.