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Finding the Fourth Proportional to 156,892.10, 216,511.04 and 85,272.30

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Solution

The fourth proportional to 156,892.10, 216,511.04 and 85,272.30 is: 117,675.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,892.10 : 216,511.04 = 85,272.30 : x
  2. Step 2: Convert to fraction form
    156,892.10/216,511.04 = 85,272.30/x
  3. Step 3: Cross multiply
    156,892.10x = 216,511.04 × 85,272.30
  4. Step 4: Simplify right side
    156,892.10x = 18,462,394,569.37
  5. Step 5: Solve for x
    x = 18,462,394,569.37/156,892.10
  6. Step 6: Final answer
    x = 117,675.75

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1.5x scale

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.