Home / 156,845.30-216,447.89-85,225.32

Finding the Fourth Proportional to 156,845.30, 216,447.89 and 85,225.32

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Solution

The fourth proportional to 156,845.30, 216,447.89 and 85,225.32 is: 117,611.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,845.30 : 216,447.89 = 85,225.32 : x
  2. Step 2: Convert to fraction form
    156,845.30/216,447.89 = 85,225.32/x
  3. Step 3: Cross multiply
    156,845.30x = 216,447.89 × 85,225.32
  4. Step 4: Simplify right side
    156,845.30x = 18,446,841,189.65
  5. Step 5: Solve for x
    x = 18,446,841,189.65/156,845.30
  6. Step 6: Final answer
    x = 117,611.69

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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.