Home / 121,316.60-181,931.70-54,788.60

Finding the Fourth Proportional to 121,316.60, 181,931.70 and 54,788.60

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Solution

The fourth proportional to 121,316.60, 181,931.70 and 54,788.60 is: 82,163.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,316.60 : 181,931.70 = 54,788.60 : x
  2. Step 2: Convert to fraction form
    121,316.60/181,931.70 = 54,788.60/x
  3. Step 3: Cross multiply
    121,316.60x = 181,931.70 × 54,788.60
  4. Step 4: Simplify right side
    121,316.60x = 9,967,783,138.62
  5. Step 5: Solve for x
    x = 9,967,783,138.62/121,316.60
  6. Step 6: Final answer
    x = 82,163.39

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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.