Home / 122,111.24-168,518.70-71,115.75

Finding the Fourth Proportional to 122,111.24, 168,518.70 and 71,115.75

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Solution

The fourth proportional to 122,111.24, 168,518.70 and 71,115.75 is: 98,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,111.24 : 168,518.70 = 71,115.75 : x
  2. Step 2: Convert to fraction form
    122,111.24/168,518.70 = 71,115.75/x
  3. Step 3: Cross multiply
    122,111.24x = 168,518.70 × 71,115.75
  4. Step 4: Simplify right side
    122,111.24x = 11,984,333,739.53
  5. Step 5: Solve for x
    x = 11,984,333,739.53/122,111.24
  6. Step 6: Final answer
    x = 98,142.76

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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.