Home / 122,921.68-169,447.62-100,225.84

Finding the Fourth Proportional to 122,921.68, 169,447.62 and 100,225.84

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Solution

The fourth proportional to 122,921.68, 169,447.62 and 100,225.84 is: 138,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,921.68 : 169,447.62 = 100,225.84 : x
  2. Step 2: Convert to fraction form
    122,921.68/169,447.62 = 100,225.84/x
  3. Step 3: Cross multiply
    122,921.68x = 169,447.62 × 100,225.84
  4. Step 4: Simplify right side
    122,921.68x = 16,983,030,050.50
  5. Step 5: Solve for x
    x = 16,983,030,050.50/122,921.68
  6. Step 6: Final answer
    x = 138,161.39

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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.