Home / 190,468.24-285,742.40-72,136.96

Finding the Fourth Proportional to 190,468.24, 285,742.40 and 72,136.96

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Solution

The fourth proportional to 190,468.24, 285,742.40 and 72,136.96 is: 108,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,468.24 : 285,742.40 = 72,136.96 : x
  2. Step 2: Convert to fraction form
    190,468.24/285,742.40 = 72,136.96/x
  3. Step 3: Cross multiply
    190,468.24x = 285,742.40 × 72,136.96
  4. Step 4: Simplify right side
    190,468.24x = 20,612,588,079.10
  5. Step 5: Solve for x
    x = 20,612,588,079.10/190,468.24
  6. Step 6: Final answer
    x = 108,220.60

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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.