Home / 156,749.80-216,314.04-85,129.24

Finding the Fourth Proportional to 156,749.80, 216,314.04 and 85,129.24

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Solution

The fourth proportional to 156,749.80, 216,314.04 and 85,129.24 is: 117,477.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.80 : 216,314.04 = 85,129.24 : x
  2. Step 2: Convert to fraction form
    156,749.80/216,314.04 = 85,129.24/x
  3. Step 3: Cross multiply
    156,749.80x = 216,314.04 × 85,129.24
  4. Step 4: Simplify right side
    156,749.80x = 18,414,649,826.53
  5. Step 5: Solve for x
    x = 18,414,649,826.53/156,749.80
  6. Step 6: Final answer
    x = 117,477.98

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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.