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Finding the Fourth Proportional to 113,699.97, 156,967.48 and 68,388.07

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Solution

The fourth proportional to 113,699.97, 156,967.48 and 68,388.07 is: 94,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,699.97 : 156,967.48 = 68,388.07 : x
  2. Step 2: Convert to fraction form
    113,699.97/156,967.48 = 68,388.07/x
  3. Step 3: Cross multiply
    113,699.97x = 156,967.48 × 68,388.07
  4. Step 4: Simplify right side
    113,699.97x = 10,734,703,009.96
  5. Step 5: Solve for x
    x = 10,734,703,009.96/113,699.97
  6. Step 6: Final answer
    x = 94,412.54

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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.