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Finding the Fourth Proportional to 136,840.60, 188,840.10 and 80,252.20

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Solution

The fourth proportional to 136,840.60, 188,840.10 and 80,252.20 is: 110,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,840.60 : 188,840.10 = 80,252.20 : x
  2. Step 2: Convert to fraction form
    136,840.60/188,840.10 = 80,252.20/x
  3. Step 3: Cross multiply
    136,840.60x = 188,840.10 × 80,252.20
  4. Step 4: Simplify right side
    136,840.60x = 15,154,833,473.22
  5. Step 5: Solve for x
    x = 15,154,833,473.22/136,840.60
  6. Step 6: Final answer
    x = 110,748.08

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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.