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Finding the Fourth Proportional to 190,348.71, 285,492.07 and 71,991.91

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Solution

The fourth proportional to 190,348.71, 285,492.07 and 71,991.91 is: 107,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,348.71 : 285,492.07 = 71,991.91 : x
  2. Step 2: Convert to fraction form
    190,348.71/285,492.07 = 71,991.91/x
  3. Step 3: Cross multiply
    190,348.71x = 285,492.07 × 71,991.91
  4. Step 4: Simplify right side
    190,348.71x = 20,553,119,409.15
  5. Step 5: Solve for x
    x = 20,553,119,409.15/190,348.71
  6. Step 6: Final answer
    x = 107,976.14

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1.5x scale

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.