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Finding the Fourth Proportional to 164,947.20, 247,485.60 and 65,090.40

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Solution

The fourth proportional to 164,947.20, 247,485.60 and 65,090.40 is: 97,661.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,947.20 : 247,485.60 = 65,090.40 : x
  2. Step 2: Convert to fraction form
    164,947.20/247,485.60 = 65,090.40/x
  3. Step 3: Cross multiply
    164,947.20x = 247,485.60 × 65,090.40
  4. Step 4: Simplify right side
    164,947.20x = 16,108,936,698.24
  5. Step 5: Solve for x
    x = 16,108,936,698.24/164,947.20
  6. Step 6: Final answer
    x = 97,661.17

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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.