Home / 135,410.46-186,864.15-74,979.81

Finding the Fourth Proportional to 135,410.46, 186,864.15 and 74,979.81

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Solution

The fourth proportional to 135,410.46, 186,864.15 and 74,979.81 is: 103,470.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,410.46 : 186,864.15 = 74,979.81 : x
  2. Step 2: Convert to fraction form
    135,410.46/186,864.15 = 74,979.81/x
  3. Step 3: Cross multiply
    135,410.46x = 186,864.15 × 74,979.81
  4. Step 4: Simplify right side
    135,410.46x = 14,011,037,358.16
  5. Step 5: Solve for x
    x = 14,011,037,358.16/135,410.46
  6. Step 6: Final answer
    x = 103,470.86

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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.