Home / 115,384.90-159,176.56-75,083.96

Finding the Fourth Proportional to 115,384.90, 159,176.56 and 75,083.96

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Solution

The fourth proportional to 115,384.90, 159,176.56 and 75,083.96 is: 103,580.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,384.90 : 159,176.56 = 75,083.96 : x
  2. Step 2: Convert to fraction form
    115,384.90/159,176.56 = 75,083.96/x
  3. Step 3: Cross multiply
    115,384.90x = 159,176.56 × 75,083.96
  4. Step 4: Simplify right side
    115,384.90x = 11,951,606,463.98
  5. Step 5: Solve for x
    x = 11,951,606,463.98/115,384.90
  6. Step 6: Final answer
    x = 103,580.33

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1.5x scale

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.