Home / 115,588.40-159,399.24-77,282.96

Finding the Fourth Proportional to 115,588.40, 159,399.24 and 77,282.96

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Solution

The fourth proportional to 115,588.40, 159,399.24 and 77,282.96 is: 106,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,588.40 : 159,399.24 = 77,282.96 : x
  2. Step 2: Convert to fraction form
    115,588.40/159,399.24 = 77,282.96/x
  3. Step 3: Cross multiply
    115,588.40x = 159,399.24 × 77,282.96
  4. Step 4: Simplify right side
    115,588.40x = 12,318,845,088.95
  5. Step 5: Solve for x
    x = 12,318,845,088.95/115,588.40
  6. Step 6: Final answer
    x = 106,575.10

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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.