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Finding the Fourth Proportional to 164,288.80, 226,719.90 and 90,703.60

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Solution

The fourth proportional to 164,288.80, 226,719.90 and 90,703.60 is: 125,171.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,288.80 : 226,719.90 = 90,703.60 : x
  2. Step 2: Convert to fraction form
    164,288.80/226,719.90 = 90,703.60/x
  3. Step 3: Cross multiply
    164,288.80x = 226,719.90 × 90,703.60
  4. Step 4: Simplify right side
    164,288.80x = 20,564,311,121.64
  5. Step 5: Solve for x
    x = 20,564,311,121.64/164,288.80
  6. Step 6: Final answer
    x = 125,171.72

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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.