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Finding the Fourth Proportional to 125,073.36, 172,628.04 and 79,740.90

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Solution

The fourth proportional to 125,073.36, 172,628.04 and 79,740.90 is: 110,059.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,073.36 : 172,628.04 = 79,740.90 : x
  2. Step 2: Convert to fraction form
    125,073.36/172,628.04 = 79,740.90/x
  3. Step 3: Cross multiply
    125,073.36x = 172,628.04 × 79,740.90
  4. Step 4: Simplify right side
    125,073.36x = 13,765,515,274.84
  5. Step 5: Solve for x
    x = 13,765,515,274.84/125,073.36
  6. Step 6: Final answer
    x = 110,059.53

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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.