Home / 131,051.79-196,244.17-86,611.95

Finding the Fourth Proportional to 131,051.79, 196,244.17 and 86,611.95

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Solution

The fourth proportional to 131,051.79, 196,244.17 and 86,611.95 is: 129,697.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,051.79 : 196,244.17 = 86,611.95 : x
  2. Step 2: Convert to fraction form
    131,051.79/196,244.17 = 86,611.95/x
  3. Step 3: Cross multiply
    131,051.79x = 196,244.17 × 86,611.95
  4. Step 4: Simplify right side
    131,051.79x = 16,997,090,023.30
  5. Step 5: Solve for x
    x = 16,997,090,023.30/131,051.79
  6. Step 6: Final answer
    x = 129,697.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.