Home / 142,059.04-196,042.56-77,528.78

Finding the Fourth Proportional to 142,059.04, 196,042.56 and 77,528.78

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Solution

The fourth proportional to 142,059.04, 196,042.56 and 77,528.78 is: 106,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,059.04 : 196,042.56 = 77,528.78 : x
  2. Step 2: Convert to fraction form
    142,059.04/196,042.56 = 77,528.78/x
  3. Step 3: Cross multiply
    142,059.04x = 196,042.56 × 77,528.78
  4. Step 4: Simplify right side
    142,059.04x = 15,198,940,504.88
  5. Step 5: Solve for x
    x = 15,198,940,504.88/142,059.04
  6. Step 6: Final answer
    x = 106,990.31

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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.