Home / 135,075.44-186,420.12-81,387.56

Finding the Fourth Proportional to 135,075.44, 186,420.12 and 81,387.56

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Solution

The fourth proportional to 135,075.44, 186,420.12 and 81,387.56 is: 112,324.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,075.44 : 186,420.12 = 81,387.56 : x
  2. Step 2: Convert to fraction form
    135,075.44/186,420.12 = 81,387.56/x
  3. Step 3: Cross multiply
    135,075.44x = 186,420.12 × 81,387.56
  4. Step 4: Simplify right side
    135,075.44x = 15,172,278,701.71
  5. Step 5: Solve for x
    x = 15,172,278,701.71/135,075.44
  6. Step 6: Final answer
    x = 112,324.48

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1.5x scale

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.