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Finding the Fourth Proportional to 153,982.20, 231,059.70 and 65,220.60

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Solution

The fourth proportional to 153,982.20, 231,059.70 and 65,220.60 is: 97,867.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,982.20 : 231,059.70 = 65,220.60 : x
  2. Step 2: Convert to fraction form
    153,982.20/231,059.70 = 65,220.60/x
  3. Step 3: Cross multiply
    153,982.20x = 231,059.70 × 65,220.60
  4. Step 4: Simplify right side
    153,982.20x = 15,069,852,269.82
  5. Step 5: Solve for x
    x = 15,069,852,269.82/153,982.20
  6. Step 6: Final answer
    x = 97,867.50

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1.5x scale

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.