Home / 99,185.78-136,843.08-56,159.40

Finding the Fourth Proportional to 99,185.78, 136,843.08 and 56,159.40

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Solution

The fourth proportional to 99,185.78, 136,843.08 and 56,159.40 is: 77,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,185.78 : 136,843.08 = 56,159.40 : x
  2. Step 2: Convert to fraction form
    99,185.78/136,843.08 = 56,159.40/x
  3. Step 3: Cross multiply
    99,185.78x = 136,843.08 × 56,159.40
  4. Step 4: Simplify right side
    99,185.78x = 7,685,025,266.95
  5. Step 5: Solve for x
    x = 7,685,025,266.95/99,185.78
  6. Step 6: Final answer
    x = 77,481.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.