Home / 115,346.46-159,256.80-74,609.31

Finding the Fourth Proportional to 115,346.46, 159,256.80 and 74,609.31

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Solution

The fourth proportional to 115,346.46, 159,256.80 and 74,609.31 is: 103,011.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,346.46 : 159,256.80 = 74,609.31 : x
  2. Step 2: Convert to fraction form
    115,346.46/159,256.80 = 74,609.31/x
  3. Step 3: Cross multiply
    115,346.46x = 159,256.80 × 74,609.31
  4. Step 4: Simplify right side
    115,346.46x = 11,882,039,960.81
  5. Step 5: Solve for x
    x = 11,882,039,960.81/115,346.46
  6. Step 6: Final answer
    x = 103,011.74

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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.