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Finding the Fourth Proportional to 127,265.80, 190,509.90 and 99,272.20

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Solution

The fourth proportional to 127,265.80, 190,509.90 and 99,272.20 is: 148,605.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,265.80 : 190,509.90 = 99,272.20 : x
  2. Step 2: Convert to fraction form
    127,265.80/190,509.90 = 99,272.20/x
  3. Step 3: Cross multiply
    127,265.80x = 190,509.90 × 99,272.20
  4. Step 4: Simplify right side
    127,265.80x = 18,912,336,894.78
  5. Step 5: Solve for x
    x = 18,912,336,894.78/127,265.80
  6. Step 6: Final answer
    x = 148,605.02

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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.