Home / 121,140-181,591.94-57,943.62

Finding the Fourth Proportional to 121,140, 181,591.94 and 57,943.62

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Solution

The fourth proportional to 121,140, 181,591.94 and 57,943.62 is: 86,858.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140 : 181,591.94 = 57,943.62 : x
  2. Step 2: Convert to fraction form
    121,140/181,591.94 = 57,943.62/x
  3. Step 3: Cross multiply
    121,140x = 181,591.94 × 57,943.62
  4. Step 4: Simplify right side
    121,140x = 10,522,094,366.42
  5. Step 5: Solve for x
    x = 10,522,094,366.42/121,140
  6. Step 6: Final answer
    x = 86,858.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.