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Finding the Fourth Proportional to 164,720.40, 247,007.70 and 75,928.20

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Solution

The fourth proportional to 164,720.40, 247,007.70 and 75,928.20 is: 113,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,720.40 : 247,007.70 = 75,928.20 : x
  2. Step 2: Convert to fraction form
    164,720.40/247,007.70 = 75,928.20/x
  3. Step 3: Cross multiply
    164,720.40x = 247,007.70 × 75,928.20
  4. Step 4: Simplify right side
    164,720.40x = 18,754,850,047.14
  5. Step 5: Solve for x
    x = 18,754,850,047.14/164,720.40
  6. Step 6: Final answer
    x = 113,858.70

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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.