Home / 135,434.28-186,883.93-74,989.72

Finding the Fourth Proportional to 135,434.28, 186,883.93 and 74,989.72

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Solution

The fourth proportional to 135,434.28, 186,883.93 and 74,989.72 is: 103,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,434.28 : 186,883.93 = 74,989.72 : x
  2. Step 2: Convert to fraction form
    135,434.28/186,883.93 = 74,989.72/x
  3. Step 3: Cross multiply
    135,434.28x = 186,883.93 × 74,989.72
  4. Step 4: Simplify right side
    135,434.28x = 14,014,373,583.20
  5. Step 5: Solve for x
    x = 14,014,373,583.20/135,434.28
  6. Step 6: Final answer
    x = 103,477.30

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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.