Home / 156,929.36-216,566.80-85,314.30

Finding the Fourth Proportional to 156,929.36, 216,566.80 and 85,314.30

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Solution

The fourth proportional to 156,929.36, 216,566.80 and 85,314.30 is: 117,736.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.36 : 216,566.80 = 85,314.30 : x
  2. Step 2: Convert to fraction form
    156,929.36/216,566.80 = 85,314.30/x
  3. Step 3: Cross multiply
    156,929.36x = 216,566.80 × 85,314.30
  4. Step 4: Simplify right side
    156,929.36x = 18,476,244,945.24
  5. Step 5: Solve for x
    x = 18,476,244,945.24/156,929.36
  6. Step 6: Final answer
    x = 117,736.06

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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.