Home / 135,173.31-186,531.60-74,740.32

Finding the Fourth Proportional to 135,173.31, 186,531.60 and 74,740.32

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Solution

The fourth proportional to 135,173.31, 186,531.60 and 74,740.32 is: 103,137.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,173.31 : 186,531.60 = 74,740.32 : x
  2. Step 2: Convert to fraction form
    135,173.31/186,531.60 = 74,740.32/x
  3. Step 3: Cross multiply
    135,173.31x = 186,531.60 × 74,740.32
  4. Step 4: Simplify right side
    135,173.31x = 13,941,431,474.11
  5. Step 5: Solve for x
    x = 13,941,431,474.11/135,173.31
  6. Step 6: Final answer
    x = 103,137.46

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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.