Home / 122,640.48-169,238.40-71,657.94

Finding the Fourth Proportional to 122,640.48, 169,238.40 and 71,657.94

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Solution

The fourth proportional to 122,640.48, 169,238.40 and 71,657.94 is: 98,884.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,640.48 : 169,238.40 = 71,657.94 : x
  2. Step 2: Convert to fraction form
    122,640.48/169,238.40 = 71,657.94/x
  3. Step 3: Cross multiply
    122,640.48x = 169,238.40 × 71,657.94
  4. Step 4: Simplify right side
    122,640.48x = 12,127,275,112.90
  5. Step 5: Solve for x
    x = 12,127,275,112.90/122,640.48
  6. Step 6: Final answer
    x = 98,884.77

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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.