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Finding the Fourth Proportional to 112,538.70, 168,808.05 and 45,935.10

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Solution

The fourth proportional to 112,538.70, 168,808.05 and 45,935.10 is: 68,902.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,538.70 : 168,808.05 = 45,935.10 : x
  2. Step 2: Convert to fraction form
    112,538.70/168,808.05 = 45,935.10/x
  3. Step 3: Cross multiply
    112,538.70x = 168,808.05 × 45,935.10
  4. Step 4: Simplify right side
    112,538.70x = 7,754,214,657.56
  5. Step 5: Solve for x
    x = 7,754,214,657.56/112,538.70
  6. Step 6: Final answer
    x = 68,902.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.