Home / 156,778.92-216,444.68-103,219.64

Finding the Fourth Proportional to 156,778.92, 216,444.68 and 103,219.64

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Solution

The fourth proportional to 156,778.92, 216,444.68 and 103,219.64 is: 142,502.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,778.92 : 216,444.68 = 103,219.64 : x
  2. Step 2: Convert to fraction form
    156,778.92/216,444.68 = 103,219.64/x
  3. Step 3: Cross multiply
    156,778.92x = 216,444.68 × 103,219.64
  4. Step 4: Simplify right side
    156,778.92x = 22,341,342,448.99
  5. Step 5: Solve for x
    x = 22,341,342,448.99/156,778.92
  6. Step 6: Final answer
    x = 142,502.21

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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.