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Finding the Fourth Proportional to 138,219.00, 190,748.36 and 77,793.56

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Solution

The fourth proportional to 138,219.00, 190,748.36 and 77,793.56 is: 107,358.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219.00 : 190,748.36 = 77,793.56 : x
  2. Step 2: Convert to fraction form
    138,219.00/190,748.36 = 77,793.56/x
  3. Step 3: Cross multiply
    138,219.00x = 190,748.36 × 77,793.56
  4. Step 4: Simplify right side
    138,219.00x = 14,838,993,457.58
  5. Step 5: Solve for x
    x = 14,838,993,457.58/138,219.00
  6. Step 6: Final answer
    x = 107,358.56

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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.