Home / 131,307.79-196,645.97-74,977.20

Finding the Fourth Proportional to 131,307.79, 196,645.97 and 74,977.20

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Solution

The fourth proportional to 131,307.79, 196,645.97 and 74,977.20 is: 112,285.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,307.79 : 196,645.97 = 74,977.20 : x
  2. Step 2: Convert to fraction form
    131,307.79/196,645.97 = 74,977.20/x
  3. Step 3: Cross multiply
    131,307.79x = 196,645.97 × 74,977.20
  4. Step 4: Simplify right side
    131,307.79x = 14,743,963,238.65
  5. Step 5: Solve for x
    x = 14,743,963,238.65/131,307.79
  6. Step 6: Final answer
    x = 112,285.52

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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.