Home / 120,714.48-166,582.80-66,999.36

Finding the Fourth Proportional to 120,714.48, 166,582.80 and 66,999.36

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Solution

The fourth proportional to 120,714.48, 166,582.80 and 66,999.36 is: 92,457.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,714.48 : 166,582.80 = 66,999.36 : x
  2. Step 2: Convert to fraction form
    120,714.48/166,582.80 = 66,999.36/x
  3. Step 3: Cross multiply
    120,714.48x = 166,582.80 × 66,999.36
  4. Step 4: Simplify right side
    120,714.48x = 11,160,940,987.01
  5. Step 5: Solve for x
    x = 11,160,940,987.01/120,714.48
  6. Step 6: Final answer
    x = 92,457.35

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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.