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Finding the Fourth Proportional to 124,771.34, 172,202.01 and 79,434.84

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Solution

The fourth proportional to 124,771.34, 172,202.01 and 79,434.84 is: 109,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,771.34 : 172,202.01 = 79,434.84 : x
  2. Step 2: Convert to fraction form
    124,771.34/172,202.01 = 79,434.84/x
  3. Step 3: Cross multiply
    124,771.34x = 172,202.01 × 79,434.84
  4. Step 4: Simplify right side
    124,771.34x = 13,678,839,112.03
  5. Step 5: Solve for x
    x = 13,678,839,112.03/124,771.34
  6. Step 6: Final answer
    x = 109,631.26

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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.