Home / 135,826.80-187,440-75,395.36

Finding the Fourth Proportional to 135,826.80, 187,440 and 75,395.36

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Solution

The fourth proportional to 135,826.80, 187,440 and 75,395.36 is: 104,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,826.80 : 187,440 = 75,395.36 : x
  2. Step 2: Convert to fraction form
    135,826.80/187,440 = 75,395.36/x
  3. Step 3: Cross multiply
    135,826.80x = 187,440 × 75,395.36
  4. Step 4: Simplify right side
    135,826.80x = 14,132,106,278.40
  5. Step 5: Solve for x
    x = 14,132,106,278.40/135,826.80
  6. Step 6: Final answer
    x = 104,045.05

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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.