Home / 135,289.17-186,698.34-77,907.51

Finding the Fourth Proportional to 135,289.17, 186,698.34 and 77,907.51

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Solution

The fourth proportional to 135,289.17, 186,698.34 and 77,907.51 is: 107,511.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,289.17 : 186,698.34 = 77,907.51 : x
  2. Step 2: Convert to fraction form
    135,289.17/186,698.34 = 77,907.51/x
  3. Step 3: Cross multiply
    135,289.17x = 186,698.34 × 77,907.51
  4. Step 4: Simplify right side
    135,289.17x = 14,545,202,790.53
  5. Step 5: Solve for x
    x = 14,545,202,790.53/135,289.17
  6. Step 6: Final answer
    x = 107,511.95

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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.