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Finding the Fourth Proportional to 127,622.52, 191,454.51 and 43,390.20

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Solution

The fourth proportional to 127,622.52, 191,454.51 and 43,390.20 is: 65,092.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,622.52 : 191,454.51 = 43,390.20 : x
  2. Step 2: Convert to fraction form
    127,622.52/191,454.51 = 43,390.20/x
  3. Step 3: Cross multiply
    127,622.52x = 191,454.51 × 43,390.20
  4. Step 4: Simplify right side
    127,622.52x = 8,307,249,479.80
  5. Step 5: Solve for x
    x = 8,307,249,479.80/127,622.52
  6. Step 6: Final answer
    x = 65,092.35

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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.