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Finding the Fourth Proportional to 109,728.60, 151,446.46 and 64,416.60

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Solution

The fourth proportional to 109,728.60, 151,446.46 and 64,416.60 is: 88,907.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728.60 : 151,446.46 = 64,416.60 : x
  2. Step 2: Convert to fraction form
    109,728.60/151,446.46 = 64,416.60/x
  3. Step 3: Cross multiply
    109,728.60x = 151,446.46 × 64,416.60
  4. Step 4: Simplify right side
    109,728.60x = 9,755,666,035.24
  5. Step 5: Solve for x
    x = 9,755,666,035.24/109,728.60
  6. Step 6: Final answer
    x = 88,907.23

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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.