Home / 142,274.52-196,333.56-78,611.04

Finding the Fourth Proportional to 142,274.52, 196,333.56 and 78,611.04

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Solution

The fourth proportional to 142,274.52, 196,333.56 and 78,611.04 is: 108,480.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,274.52 : 196,333.56 = 78,611.04 : x
  2. Step 2: Convert to fraction form
    142,274.52/196,333.56 = 78,611.04/x
  3. Step 3: Cross multiply
    142,274.52x = 196,333.56 × 78,611.04
  4. Step 4: Simplify right side
    142,274.52x = 15,433,985,338.50
  5. Step 5: Solve for x
    x = 15,433,985,338.50/142,274.52
  6. Step 6: Final answer
    x = 108,480.32

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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.