Home / 135,146.16-186,496.20-74,712.96

Finding the Fourth Proportional to 135,146.16, 186,496.20 and 74,712.96

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Solution

The fourth proportional to 135,146.16, 186,496.20 and 74,712.96 is: 103,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,146.16 : 186,496.20 = 74,712.96 : x
  2. Step 2: Convert to fraction form
    135,146.16/186,496.20 = 74,712.96/x
  3. Step 3: Cross multiply
    135,146.16x = 186,496.20 × 74,712.96
  4. Step 4: Simplify right side
    135,146.16x = 13,933,683,130.75
  5. Step 5: Solve for x
    x = 13,933,683,130.75/135,146.16
  6. Step 6: Final answer
    x = 103,100.84

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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.