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Finding the Fourth Proportional to 112,385.70, 168,082.56 and 99,992.70

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Solution

The fourth proportional to 112,385.70, 168,082.56 and 99,992.70 is: 149,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,385.70 : 168,082.56 = 99,992.70 : x
  2. Step 2: Convert to fraction form
    112,385.70/168,082.56 = 99,992.70/x
  3. Step 3: Cross multiply
    112,385.70x = 168,082.56 × 99,992.70
  4. Step 4: Simplify right side
    112,385.70x = 16,807,028,997.31
  5. Step 5: Solve for x
    x = 16,807,028,997.31/112,385.70
  6. Step 6: Final answer
    x = 149,547.75

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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.