Home / 136,836.88-205,087.60-77,722.32

Finding the Fourth Proportional to 136,836.88, 205,087.60 and 77,722.32

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Solution

The fourth proportional to 136,836.88, 205,087.60 and 77,722.32 is: 116,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,836.88 : 205,087.60 = 77,722.32 : x
  2. Step 2: Convert to fraction form
    136,836.88/205,087.60 = 77,722.32/x
  3. Step 3: Cross multiply
    136,836.88x = 205,087.60 × 77,722.32
  4. Step 4: Simplify right side
    136,836.88x = 15,939,884,075.23
  5. Step 5: Solve for x
    x = 15,939,884,075.23/136,836.88
  6. Step 6: Final answer
    x = 116,488.22

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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.