Home / 156,751.08-216,316.44-85,131.12

Finding the Fourth Proportional to 156,751.08, 216,316.44 and 85,131.12

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Solution

The fourth proportional to 156,751.08, 216,316.44 and 85,131.12 is: 117,480.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,751.08 : 216,316.44 = 85,131.12 : x
  2. Step 2: Convert to fraction form
    156,751.08/216,316.44 = 85,131.12/x
  3. Step 3: Cross multiply
    156,751.08x = 216,316.44 × 85,131.12
  4. Step 4: Simplify right side
    156,751.08x = 18,415,260,811.61
  5. Step 5: Solve for x
    x = 18,415,260,811.61/156,751.08
  6. Step 6: Final answer
    x = 117,480.92

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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.