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Finding the Fourth Proportional to 142,612.98, 196,744.11 and 85,992.90

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Solution

The fourth proportional to 142,612.98, 196,744.11 and 85,992.90 is: 118,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,612.98 : 196,744.11 = 85,992.90 : x
  2. Step 2: Convert to fraction form
    142,612.98/196,744.11 = 85,992.90/x
  3. Step 3: Cross multiply
    142,612.98x = 196,744.11 × 85,992.90
  4. Step 4: Simplify right side
    142,612.98x = 16,918,596,576.82
  5. Step 5: Solve for x
    x = 16,918,596,576.82/142,612.98
  6. Step 6: Final answer
    x = 118,632.94

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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.