Home / 136,075.78-187,789.40-74,826.64

Finding the Fourth Proportional to 136,075.78, 187,789.40 and 74,826.64

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Solution

The fourth proportional to 136,075.78, 187,789.40 and 74,826.64 is: 103,263.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,075.78 : 187,789.40 = 74,826.64 : x
  2. Step 2: Convert to fraction form
    136,075.78/187,789.40 = 74,826.64/x
  3. Step 3: Cross multiply
    136,075.78x = 187,789.40 × 74,826.64
  4. Step 4: Simplify right side
    136,075.78x = 14,051,649,829.62
  5. Step 5: Solve for x
    x = 14,051,649,829.62/136,075.78
  6. Step 6: Final answer
    x = 103,263.42

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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.