Home / 190,322.30-285,592.80-72,005.60

Finding the Fourth Proportional to 190,322.30, 285,592.80 and 72,005.60

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Solution

The fourth proportional to 190,322.30, 285,592.80 and 72,005.60 is: 108,049.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,322.30 : 285,592.80 = 72,005.60 : x
  2. Step 2: Convert to fraction form
    190,322.30/285,592.80 = 72,005.60/x
  3. Step 3: Cross multiply
    190,322.30x = 285,592.80 × 72,005.60
  4. Step 4: Simplify right side
    190,322.30x = 20,564,280,919.68
  5. Step 5: Solve for x
    x = 20,564,280,919.68/190,322.30
  6. Step 6: Final answer
    x = 108,049.77

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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.