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Finding the Fourth Proportional to 148,653.60, 205,142.10 and 80,670.57

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Solution

The fourth proportional to 148,653.60, 205,142.10 and 80,670.57 is: 111,325.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,653.60 : 205,142.10 = 80,670.57 : x
  2. Step 2: Convert to fraction form
    148,653.60/205,142.10 = 80,670.57/x
  3. Step 3: Cross multiply
    148,653.60x = 205,142.10 × 80,670.57
  4. Step 4: Simplify right side
    148,653.60x = 16,548,929,734.64
  5. Step 5: Solve for x
    x = 16,548,929,734.64/148,653.60
  6. Step 6: Final answer
    x = 111,325.46

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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.