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Finding the Fourth Proportional to 189,713.01, 261,800.77 and 103,670.10

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Solution

The fourth proportional to 189,713.01, 261,800.77 and 103,670.10 is: 143,063.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,713.01 : 261,800.77 = 103,670.10 : x
  2. Step 2: Convert to fraction form
    189,713.01/261,800.77 = 103,670.10/x
  3. Step 3: Cross multiply
    189,713.01x = 261,800.77 × 103,670.10
  4. Step 4: Simplify right side
    189,713.01x = 27,140,912,005.98
  5. Step 5: Solve for x
    x = 27,140,912,005.98/189,713.01
  6. Step 6: Final answer
    x = 143,063.00

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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.