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Finding the Fourth Proportional to 125,123.45, 172,748.79 and 96,389.01

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Solution

The fourth proportional to 125,123.45, 172,748.79 and 96,389.01 is: 133,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,123.45 : 172,748.79 = 96,389.01 : x
  2. Step 2: Convert to fraction form
    125,123.45/172,748.79 = 96,389.01/x
  3. Step 3: Cross multiply
    125,123.45x = 172,748.79 × 96,389.01
  4. Step 4: Simplify right side
    125,123.45x = 16,651,084,846.80
  5. Step 5: Solve for x
    x = 16,651,084,846.80/125,123.45
  6. Step 6: Final answer
    x = 133,077.26

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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.