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Finding the Fourth Proportional to 124,279.01, 171,450.47 and 83,978.09

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Solution

The fourth proportional to 124,279.01, 171,450.47 and 83,978.09 is: 115,852.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,279.01 : 171,450.47 = 83,978.09 : x
  2. Step 2: Convert to fraction form
    124,279.01/171,450.47 = 83,978.09/x
  3. Step 3: Cross multiply
    124,279.01x = 171,450.47 × 83,978.09
  4. Step 4: Simplify right side
    124,279.01x = 14,398,081,723.06
  5. Step 5: Solve for x
    x = 14,398,081,723.06/124,279.01
  6. Step 6: Final answer
    x = 115,852.89

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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.