Home / 135,217.32-186,598.80-74,790.54

Finding the Fourth Proportional to 135,217.32, 186,598.80 and 74,790.54

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Solution

The fourth proportional to 135,217.32, 186,598.80 and 74,790.54 is: 103,210.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,217.32 : 186,598.80 = 74,790.54 : x
  2. Step 2: Convert to fraction form
    135,217.32/186,598.80 = 74,790.54/x
  3. Step 3: Cross multiply
    135,217.32x = 186,598.80 × 74,790.54
  4. Step 4: Simplify right side
    135,217.32x = 13,955,825,015.35
  5. Step 5: Solve for x
    x = 13,955,825,015.35/135,217.32
  6. Step 6: Final answer
    x = 103,210.34

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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.