Home / 122,216.08-168,530.28-90,451.60

Finding the Fourth Proportional to 122,216.08, 168,530.28 and 90,451.60

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Solution

The fourth proportional to 122,216.08, 168,530.28 and 90,451.60 is: 124,728.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,216.08 : 168,530.28 = 90,451.60 : x
  2. Step 2: Convert to fraction form
    122,216.08/168,530.28 = 90,451.60/x
  3. Step 3: Cross multiply
    122,216.08x = 168,530.28 × 90,451.60
  4. Step 4: Simplify right side
    122,216.08x = 15,243,833,474.45
  5. Step 5: Solve for x
    x = 15,243,833,474.45/122,216.08
  6. Step 6: Final answer
    x = 124,728.54

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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.