Home / 156,618.65-216,022.09-143,739.41

Finding the Fourth Proportional to 156,618.65, 216,022.09 and 143,739.41

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Solution

The fourth proportional to 156,618.65, 216,022.09 and 143,739.41 is: 198,257.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,618.65 : 216,022.09 = 143,739.41 : x
  2. Step 2: Convert to fraction form
    156,618.65/216,022.09 = 143,739.41/x
  3. Step 3: Cross multiply
    156,618.65x = 216,022.09 × 143,739.41
  4. Step 4: Simplify right side
    156,618.65x = 31,050,887,944.27
  5. Step 5: Solve for x
    x = 31,050,887,944.27/156,618.65
  6. Step 6: Final answer
    x = 198,257.93

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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.