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Finding the Fourth Proportional to 156,862.68, 216,467.74 and 85,242.98

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Solution

The fourth proportional to 156,862.68, 216,467.74 and 85,242.98 is: 117,633.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,862.68 : 216,467.74 = 85,242.98 : x
  2. Step 2: Convert to fraction form
    156,862.68/216,467.74 = 85,242.98/x
  3. Step 3: Cross multiply
    156,862.68x = 216,467.74 × 85,242.98
  4. Step 4: Simplify right side
    156,862.68x = 18,452,355,879.19
  5. Step 5: Solve for x
    x = 18,452,355,879.19/156,862.68
  6. Step 6: Final answer
    x = 117,633.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.