Home / 131,719.02-181,772.46-71,289.71

Finding the Fourth Proportional to 131,719.02, 181,772.46 and 71,289.71

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Solution

The fourth proportional to 131,719.02, 181,772.46 and 71,289.71 is: 98,379.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,719.02 : 181,772.46 = 71,289.71 : x
  2. Step 2: Convert to fraction form
    131,719.02/181,772.46 = 71,289.71/x
  3. Step 3: Cross multiply
    131,719.02x = 181,772.46 × 71,289.71
  4. Step 4: Simplify right side
    131,719.02x = 12,958,505,050.52
  5. Step 5: Solve for x
    x = 12,958,505,050.52/131,719.02
  6. Step 6: Final answer
    x = 98,379.91

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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.