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Finding the Fourth Proportional to 148,851.17, 205,416.02 and 80,868.64

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Solution

The fourth proportional to 148,851.17, 205,416.02 and 80,868.64 is: 111,599.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,851.17 : 205,416.02 = 80,868.64 : x
  2. Step 2: Convert to fraction form
    148,851.17/205,416.02 = 80,868.64/x
  3. Step 3: Cross multiply
    148,851.17x = 205,416.02 × 80,868.64
  4. Step 4: Simplify right side
    148,851.17x = 16,611,714,171.61
  5. Step 5: Solve for x
    x = 16,611,714,171.61/148,851.17
  6. Step 6: Final answer
    x = 111,599.49

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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.