Home / 115,123.26-172,783.30-45,051.78

Finding the Fourth Proportional to 115,123.26, 172,783.30 and 45,051.78

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Solution

The fourth proportional to 115,123.26, 172,783.30 and 45,051.78 is: 67,616.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,123.26 : 172,783.30 = 45,051.78 : x
  2. Step 2: Convert to fraction form
    115,123.26/172,783.30 = 45,051.78/x
  3. Step 3: Cross multiply
    115,123.26x = 172,783.30 × 45,051.78
  4. Step 4: Simplify right side
    115,123.26x = 7,784,195,219.27
  5. Step 5: Solve for x
    x = 7,784,195,219.27/115,123.26
  6. Step 6: Final answer
    x = 67,616.18

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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.