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Finding the Fourth Proportional to 113,999.10, 170,998.65 and 112,443.90

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Solution

The fourth proportional to 113,999.10, 170,998.65 and 112,443.90 is: 168,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,999.10 : 170,998.65 = 112,443.90 : x
  2. Step 2: Convert to fraction form
    113,999.10/170,998.65 = 112,443.90/x
  3. Step 3: Cross multiply
    113,999.10x = 170,998.65 × 112,443.90
  4. Step 4: Simplify right side
    113,999.10x = 19,227,755,100.74
  5. Step 5: Solve for x
    x = 19,227,755,100.74/113,999.10
  6. Step 6: Final answer
    x = 168,665.85

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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.