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Finding the Fourth Proportional to 126,957.90, 190,485.45 and 124,965.30

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Solution

The fourth proportional to 126,957.90, 190,485.45 and 124,965.30 is: 187,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,957.90 : 190,485.45 = 124,965.30 : x
  2. Step 2: Convert to fraction form
    126,957.90/190,485.45 = 124,965.30/x
  3. Step 3: Cross multiply
    126,957.90x = 190,485.45 × 124,965.30
  4. Step 4: Simplify right side
    126,957.90x = 23,804,071,404.89
  5. Step 5: Solve for x
    x = 23,804,071,404.89/126,957.90
  6. Step 6: Final answer
    x = 187,495.79

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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.