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Finding the Fourth Proportional to 190,619.65, 285,743.58 and 90,753

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Solution

The fourth proportional to 190,619.65, 285,743.58 and 90,753 is: 136,041.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,619.65 : 285,743.58 = 90,753 : x
  2. Step 2: Convert to fraction form
    190,619.65/285,743.58 = 90,753/x
  3. Step 3: Cross multiply
    190,619.65x = 285,743.58 × 90,753
  4. Step 4: Simplify right side
    190,619.65x = 25,932,087,115.74
  5. Step 5: Solve for x
    x = 25,932,087,115.74/190,619.65
  6. Step 6: Final answer
    x = 136,041.00

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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.