Home / 135,075.62-186,403.17-74,650.34

Finding the Fourth Proportional to 135,075.62, 186,403.17 and 74,650.34

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Solution

The fourth proportional to 135,075.62, 186,403.17 and 74,650.34 is: 103,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,075.62 : 186,403.17 = 74,650.34 : x
  2. Step 2: Convert to fraction form
    135,075.62/186,403.17 = 74,650.34/x
  3. Step 3: Cross multiply
    135,075.62x = 186,403.17 × 74,650.34
  4. Step 4: Simplify right side
    135,075.62x = 13,915,060,017.58
  5. Step 5: Solve for x
    x = 13,915,060,017.58/135,075.62
  6. Step 6: Final answer
    x = 103,016.81

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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.