Home / 142,542.05-196,706.88-78,883.34

Finding the Fourth Proportional to 142,542.05, 196,706.88 and 78,883.34

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Solution

The fourth proportional to 142,542.05, 196,706.88 and 78,883.34 is: 108,858.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,542.05 : 196,706.88 = 78,883.34 : x
  2. Step 2: Convert to fraction form
    142,542.05/196,706.88 = 78,883.34/x
  3. Step 3: Cross multiply
    142,542.05x = 196,706.88 × 78,883.34
  4. Step 4: Simplify right side
    142,542.05x = 15,516,894,711.84
  5. Step 5: Solve for x
    x = 15,516,894,711.84/142,542.05
  6. Step 6: Final answer
    x = 108,858.37

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1.5x scale

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.