Home / 135,344.37-186,770.47-74,915.13

Finding the Fourth Proportional to 135,344.37, 186,770.47 and 74,915.13

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Solution

The fourth proportional to 135,344.37, 186,770.47 and 74,915.13 is: 103,380.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,344.37 : 186,770.47 = 74,915.13 : x
  2. Step 2: Convert to fraction form
    135,344.37/186,770.47 = 74,915.13/x
  3. Step 3: Cross multiply
    135,344.37x = 186,770.47 × 74,915.13
  4. Step 4: Simplify right side
    135,344.37x = 13,991,934,040.21
  5. Step 5: Solve for x
    x = 13,991,934,040.21/135,344.37
  6. Step 6: Final answer
    x = 103,380.24

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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.