Home / 122,015.79-168,294.81-74,272.20

Finding the Fourth Proportional to 122,015.79, 168,294.81 and 74,272.20

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Solution

The fourth proportional to 122,015.79, 168,294.81 and 74,272.20 is: 102,442.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,015.79 : 168,294.81 = 74,272.20 : x
  2. Step 2: Convert to fraction form
    122,015.79/168,294.81 = 74,272.20/x
  3. Step 3: Cross multiply
    122,015.79x = 168,294.81 × 74,272.20
  4. Step 4: Simplify right side
    122,015.79x = 12,499,625,434.70
  5. Step 5: Solve for x
    x = 12,499,625,434.70/122,015.79
  6. Step 6: Final answer
    x = 102,442.69

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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.