Home / 122,379.30-168,883.29-71,427.06

Finding the Fourth Proportional to 122,379.30, 168,883.29 and 71,427.06

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Solution

The fourth proportional to 122,379.30, 168,883.29 and 71,427.06 is: 98,569.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,379.30 : 168,883.29 = 71,427.06 : x
  2. Step 2: Convert to fraction form
    122,379.30/168,883.29 = 71,427.06/x
  3. Step 3: Cross multiply
    122,379.30x = 168,883.29 × 71,427.06
  4. Step 4: Simplify right side
    122,379.30x = 12,062,836,887.83
  5. Step 5: Solve for x
    x = 12,062,836,887.83/122,379.30
  6. Step 6: Final answer
    x = 98,569.26

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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.