Home / 142,713.49-196,951.10-79,051.28

Finding the Fourth Proportional to 142,713.49, 196,951.10 and 79,051.28

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Solution

The fourth proportional to 142,713.49, 196,951.10 and 79,051.28 is: 109,094.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,713.49 : 196,951.10 = 79,051.28 : x
  2. Step 2: Convert to fraction form
    142,713.49/196,951.10 = 79,051.28/x
  3. Step 3: Cross multiply
    142,713.49x = 196,951.10 × 79,051.28
  4. Step 4: Simplify right side
    142,713.49x = 15,569,236,552.41
  5. Step 5: Solve for x
    x = 15,569,236,552.41/142,713.49
  6. Step 6: Final answer
    x = 109,094.36

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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.