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Finding the Fourth Proportional to 190,656.96, 285,929.76 and 72,242.88

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Solution

The fourth proportional to 190,656.96, 285,929.76 and 72,242.88 is: 108,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,656.96 : 285,929.76 = 72,242.88 : x
  2. Step 2: Convert to fraction form
    190,656.96/285,929.76 = 72,242.88/x
  3. Step 3: Cross multiply
    190,656.96x = 285,929.76 × 72,242.88
  4. Step 4: Simplify right side
    190,656.96x = 20,656,389,340.11
  5. Step 5: Solve for x
    x = 20,656,389,340.11/190,656.96
  6. Step 6: Final answer
    x = 108,343.22

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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.