Home / 115,135.32-172,776.48-55,938.72

Finding the Fourth Proportional to 115,135.32, 172,776.48 and 55,938.72

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Solution

The fourth proportional to 115,135.32, 172,776.48 and 55,938.72 is: 83,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,135.32 : 172,776.48 = 55,938.72 : x
  2. Step 2: Convert to fraction form
    115,135.32/172,776.48 = 55,938.72/x
  3. Step 3: Cross multiply
    115,135.32x = 172,776.48 × 55,938.72
  4. Step 4: Simplify right side
    115,135.32x = 9,664,895,137.31
  5. Step 5: Solve for x
    x = 9,664,895,137.31/115,135.32
  6. Step 6: Final answer
    x = 83,943.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.