Home / 118,719.20-178,050-39,812.96

Finding the Fourth Proportional to 118,719.20, 178,050 and 39,812.96

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Solution

The fourth proportional to 118,719.20, 178,050 and 39,812.96 is: 59,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,719.20 : 178,050 = 39,812.96 : x
  2. Step 2: Convert to fraction form
    118,719.20/178,050 = 39,812.96/x
  3. Step 3: Cross multiply
    118,719.20x = 178,050 × 39,812.96
  4. Step 4: Simplify right side
    118,719.20x = 7,088,697,528
  5. Step 5: Solve for x
    x = 7,088,697,528/118,719.20
  6. Step 6: Final answer
    x = 59,709.78

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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.