Home / 131,710.93-197,366.83-87,178.14

Finding the Fourth Proportional to 131,710.93, 197,366.83 and 87,178.14

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Solution

The fourth proportional to 131,710.93, 197,366.83 and 87,178.14 is: 130,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,710.93 : 197,366.83 = 87,178.14 : x
  2. Step 2: Convert to fraction form
    131,710.93/197,366.83 = 87,178.14/x
  3. Step 3: Cross multiply
    131,710.93x = 197,366.83 × 87,178.14
  4. Step 4: Simplify right side
    131,710.93x = 17,206,073,137.10
  5. Step 5: Solve for x
    x = 17,206,073,137.10/131,710.93
  6. Step 6: Final answer
    x = 130,635.12

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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.