Home / 122,113.28-168,518.02-79,647.44

Finding the Fourth Proportional to 122,113.28, 168,518.02 and 79,647.44

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Solution

The fourth proportional to 122,113.28, 168,518.02 and 79,647.44 is: 109,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,113.28 : 168,518.02 = 79,647.44 : x
  2. Step 2: Convert to fraction form
    122,113.28/168,518.02 = 79,647.44/x
  3. Step 3: Cross multiply
    122,113.28x = 168,518.02 × 79,647.44
  4. Step 4: Simplify right side
    122,113.28x = 13,422,028,886.87
  5. Step 5: Solve for x
    x = 13,422,028,886.87/122,113.28
  6. Step 6: Final answer
    x = 109,914.57

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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.