Home / 131,269.52-196,904.28-72,479

Finding the Fourth Proportional to 131,269.52, 196,904.28 and 72,479

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Solution

The fourth proportional to 131,269.52, 196,904.28 and 72,479 is: 108,718.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,269.52 : 196,904.28 = 72,479 : x
  2. Step 2: Convert to fraction form
    131,269.52/196,904.28 = 72,479/x
  3. Step 3: Cross multiply
    131,269.52x = 196,904.28 × 72,479
  4. Step 4: Simplify right side
    131,269.52x = 14,271,425,310.12
  5. Step 5: Solve for x
    x = 14,271,425,310.12/131,269.52
  6. Step 6: Final answer
    x = 108,718.50

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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.