Home / 131,158.49-196,653.41-86,126.63

Finding the Fourth Proportional to 131,158.49, 196,653.41 and 86,126.63

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Solution

The fourth proportional to 131,158.49, 196,653.41 and 86,126.63 is: 129,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,158.49 : 196,653.41 = 86,126.63 : x
  2. Step 2: Convert to fraction form
    131,158.49/196,653.41 = 86,126.63/x
  3. Step 3: Cross multiply
    131,158.49x = 196,653.41 × 86,126.63
  4. Step 4: Simplify right side
    131,158.49x = 16,937,095,542.31
  5. Step 5: Solve for x
    x = 16,937,095,542.31/131,158.49
  6. Step 6: Final answer
    x = 129,134.58

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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.