Home / 118,947.76-178,428.36-52,419.12

Finding the Fourth Proportional to 118,947.76, 178,428.36 and 52,419.12

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Solution

The fourth proportional to 118,947.76, 178,428.36 and 52,419.12 is: 78,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,947.76 : 178,428.36 = 52,419.12 : x
  2. Step 2: Convert to fraction form
    118,947.76/178,428.36 = 52,419.12/x
  3. Step 3: Cross multiply
    118,947.76x = 178,428.36 × 52,419.12
  4. Step 4: Simplify right side
    118,947.76x = 9,353,057,614.24
  5. Step 5: Solve for x
    x = 9,353,057,614.24/118,947.76
  6. Step 6: Final answer
    x = 78,631.64

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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.