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Finding the Fourth Proportional to 103,881.68, 143,410.92 and 73,739.01

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Solution

The fourth proportional to 103,881.68, 143,410.92 and 73,739.01 is: 101,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,881.68 : 143,410.92 = 73,739.01 : x
  2. Step 2: Convert to fraction form
    103,881.68/143,410.92 = 73,739.01/x
  3. Step 3: Cross multiply
    103,881.68x = 143,410.92 × 73,739.01
  4. Step 4: Simplify right side
    103,881.68x = 10,574,979,263.99
  5. Step 5: Solve for x
    x = 10,574,979,263.99/103,881.68
  6. Step 6: Final answer
    x = 101,798.31

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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.