Home / 156,751.22-216,317.96-85,131.76

Finding the Fourth Proportional to 156,751.22, 216,317.96 and 85,131.76

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Solution

The fourth proportional to 156,751.22, 216,317.96 and 85,131.76 is: 117,482.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,751.22 : 216,317.96 = 85,131.76 : x
  2. Step 2: Convert to fraction form
    156,751.22/216,317.96 = 85,131.76/x
  3. Step 3: Cross multiply
    156,751.22x = 216,317.96 × 85,131.76
  4. Step 4: Simplify right side
    156,751.22x = 18,415,528,654.41
  5. Step 5: Solve for x
    x = 18,415,528,654.41/156,751.22
  6. Step 6: Final answer
    x = 117,482.52

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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.