Home / 190,585.12-285,899.76-72,344.80

Finding the Fourth Proportional to 190,585.12, 285,899.76 and 72,344.80

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Solution

The fourth proportional to 190,585.12, 285,899.76 and 72,344.80 is: 108,525.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,585.12 : 285,899.76 = 72,344.80 : x
  2. Step 2: Convert to fraction form
    190,585.12/285,899.76 = 72,344.80/x
  3. Step 3: Cross multiply
    190,585.12x = 285,899.76 × 72,344.80
  4. Step 4: Simplify right side
    190,585.12x = 20,683,360,957.25
  5. Step 5: Solve for x
    x = 20,683,360,957.25/190,585.12
  6. Step 6: Final answer
    x = 108,525.58

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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.