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Finding the Fourth Proportional to 142,992.44, 197,334.84 and 86,392.88

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Solution

The fourth proportional to 142,992.44, 197,334.84 and 86,392.88 is: 119,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992.44 : 197,334.84 = 86,392.88 : x
  2. Step 2: Convert to fraction form
    142,992.44/197,334.84 = 86,392.88/x
  3. Step 3: Cross multiply
    142,992.44x = 197,334.84 × 86,392.88
  4. Step 4: Simplify right side
    142,992.44x = 17,048,325,151.94
  5. Step 5: Solve for x
    x = 17,048,325,151.94/142,992.44
  6. Step 6: Final answer
    x = 119,225.36

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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.