Home / 135,075.64-186,398.94-78,482.56

Finding the Fourth Proportional to 135,075.64, 186,398.94 and 78,482.56

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Solution

The fourth proportional to 135,075.64, 186,398.94 and 78,482.56 is: 108,302.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,075.64 : 186,398.94 = 78,482.56 : x
  2. Step 2: Convert to fraction form
    135,075.64/186,398.94 = 78,482.56/x
  3. Step 3: Cross multiply
    135,075.64x = 186,398.94 × 78,482.56
  4. Step 4: Simplify right side
    135,075.64x = 14,629,065,992.49
  5. Step 5: Solve for x
    x = 14,629,065,992.49/135,075.64
  6. Step 6: Final answer
    x = 108,302.77

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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.