Home / 137,505.97-189,769.85-77,075.65

Finding the Fourth Proportional to 137,505.97, 189,769.85 and 77,075.65

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Solution

The fourth proportional to 137,505.97, 189,769.85 and 77,075.65 is: 106,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,505.97 : 189,769.85 = 77,075.65 : x
  2. Step 2: Convert to fraction form
    137,505.97/189,769.85 = 77,075.65/x
  3. Step 3: Cross multiply
    137,505.97x = 189,769.85 × 77,075.65
  4. Step 4: Simplify right side
    137,505.97x = 14,626,634,539.15
  5. Step 5: Solve for x
    x = 14,626,634,539.15/137,505.97
  6. Step 6: Final answer
    x = 106,370.91

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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.