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Finding the Fourth Proportional to 145,663.20, 217,976.40 and 101,080.80

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Solution

The fourth proportional to 145,663.20, 217,976.40 and 101,080.80 is: 151,261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,663.20 : 217,976.40 = 101,080.80 : x
  2. Step 2: Convert to fraction form
    145,663.20/217,976.40 = 101,080.80/x
  3. Step 3: Cross multiply
    145,663.20x = 217,976.40 × 101,080.80
  4. Step 4: Simplify right side
    145,663.20x = 22,033,228,893.12
  5. Step 5: Solve for x
    x = 22,033,228,893.12/145,663.20
  6. Step 6: Final answer
    x = 151,261.46

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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.