Home / 135,012.42-186,318.70-74,581.80

Finding the Fourth Proportional to 135,012.42, 186,318.70 and 74,581.80

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Solution

The fourth proportional to 135,012.42, 186,318.70 and 74,581.80 is: 102,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,012.42 : 186,318.70 = 74,581.80 : x
  2. Step 2: Convert to fraction form
    135,012.42/186,318.70 = 74,581.80/x
  3. Step 3: Cross multiply
    135,012.42x = 186,318.70 × 74,581.80
  4. Step 4: Simplify right side
    135,012.42x = 13,895,983,134.51
  5. Step 5: Solve for x
    x = 13,895,983,134.51/135,012.42
  6. Step 6: Final answer
    x = 102,923.74

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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.