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Finding the Fourth Proportional to 156,605.46, 216,117.12 and 84,986.10

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Solution

The fourth proportional to 156,605.46, 216,117.12 and 84,986.10 is: 117,281.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,605.46 : 216,117.12 = 84,986.10 : x
  2. Step 2: Convert to fraction form
    156,605.46/216,117.12 = 84,986.10/x
  3. Step 3: Cross multiply
    156,605.46x = 216,117.12 × 84,986.10
  4. Step 4: Simplify right side
    156,605.46x = 18,366,951,172.03
  5. Step 5: Solve for x
    x = 18,366,951,172.03/156,605.46
  6. Step 6: Final answer
    x = 117,281.68

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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.