Home / 156,515.60-215,991.60-84,895.36

Finding the Fourth Proportional to 156,515.60, 215,991.60 and 84,895.36

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Solution

The fourth proportional to 156,515.60, 215,991.60 and 84,895.36 is: 117,155.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,515.60 : 215,991.60 = 84,895.36 : x
  2. Step 2: Convert to fraction form
    156,515.60/215,991.60 = 84,895.36/x
  3. Step 3: Cross multiply
    156,515.60x = 215,991.60 × 84,895.36
  4. Step 4: Simplify right side
    156,515.60x = 18,336,684,638.98
  5. Step 5: Solve for x
    x = 18,336,684,638.98/156,515.60
  6. Step 6: Final answer
    x = 117,155.64

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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.