Home / 190,701.30-285,965.55-72,333.30

Finding the Fourth Proportional to 190,701.30, 285,965.55 and 72,333.30

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Solution

The fourth proportional to 190,701.30, 285,965.55 and 72,333.30 is: 108,467.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,701.30 : 285,965.55 = 72,333.30 : x
  2. Step 2: Convert to fraction form
    190,701.30/285,965.55 = 72,333.30/x
  3. Step 3: Cross multiply
    190,701.30x = 285,965.55 × 72,333.30
  4. Step 4: Simplify right side
    190,701.30x = 20,684,831,917.82
  5. Step 5: Solve for x
    x = 20,684,831,917.82/190,701.30
  6. Step 6: Final answer
    x = 108,467.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.