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Finding the Fourth Proportional to 190,462.60, 285,696.72 and 72,102.16

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Solution

The fourth proportional to 190,462.60, 285,696.72 and 72,102.16 is: 108,154.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,462.60 : 285,696.72 = 72,102.16 : x
  2. Step 2: Convert to fraction form
    190,462.60/285,696.72 = 72,102.16/x
  3. Step 3: Cross multiply
    190,462.60x = 285,696.72 × 72,102.16
  4. Step 4: Simplify right side
    190,462.60x = 20,599,350,616.92
  5. Step 5: Solve for x
    x = 20,599,350,616.92/190,462.60
  6. Step 6: Final answer
    x = 108,154.31

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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.