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Finding the Fourth Proportional to 149,127.90, 205,693.47 and 124,530.90

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Solution

The fourth proportional to 149,127.90, 205,693.47 and 124,530.90 is: 171,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,127.90 : 205,693.47 = 124,530.90 : x
  2. Step 2: Convert to fraction form
    149,127.90/205,693.47 = 124,530.90/x
  3. Step 3: Cross multiply
    149,127.90x = 205,693.47 × 124,530.90
  4. Step 4: Simplify right side
    149,127.90x = 25,615,192,943.22
  5. Step 5: Solve for x
    x = 25,615,192,943.22/149,127.90
  6. Step 6: Final answer
    x = 171,766.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.