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Finding the Fourth Proportional to 109,968, 151,754.19 and 64,651.14

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Solution

The fourth proportional to 109,968, 151,754.19 and 64,651.14 is: 89,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,968 : 151,754.19 = 64,651.14 : x
  2. Step 2: Convert to fraction form
    109,968/151,754.19 = 64,651.14/x
  3. Step 3: Cross multiply
    109,968x = 151,754.19 × 64,651.14
  4. Step 4: Simplify right side
    109,968x = 9,811,081,383.28
  5. Step 5: Solve for x
    x = 9,811,081,383.28/109,968
  6. Step 6: Final answer
    x = 89,217.60

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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.