Home / 156,929.36-216,559.97-85,311.19

Finding the Fourth Proportional to 156,929.36, 216,559.97 and 85,311.19

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Solution

The fourth proportional to 156,929.36, 216,559.97 and 85,311.19 is: 117,728.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.36 : 216,559.97 = 85,311.19 : x
  2. Step 2: Convert to fraction form
    156,929.36/216,559.97 = 85,311.19/x
  3. Step 3: Cross multiply
    156,929.36x = 216,559.97 × 85,311.19
  4. Step 4: Simplify right side
    156,929.36x = 18,474,987,779.11
  5. Step 5: Solve for x
    x = 18,474,987,779.11/156,929.36
  6. Step 6: Final answer
    x = 117,728.05

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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.