Home / 142,144.02-196,157.40-78,482.26

Finding the Fourth Proportional to 142,144.02, 196,157.40 and 78,482.26

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Solution

The fourth proportional to 142,144.02, 196,157.40 and 78,482.26 is: 108,304.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,144.02 : 196,157.40 = 78,482.26 : x
  2. Step 2: Convert to fraction form
    142,144.02/196,157.40 = 78,482.26/x
  3. Step 3: Cross multiply
    142,144.02x = 196,157.40 × 78,482.26
  4. Step 4: Simplify right side
    142,144.02x = 15,394,876,067.72
  5. Step 5: Solve for x
    x = 15,394,876,067.72/142,144.02
  6. Step 6: Final answer
    x = 108,304.77

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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.