Home / 190,430.47-285,685.76-72,099.19

Finding the Fourth Proportional to 190,430.47, 285,685.76 and 72,099.19

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Solution

The fourth proportional to 190,430.47, 285,685.76 and 72,099.19 is: 108,163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,430.47 : 285,685.76 = 72,099.19 : x
  2. Step 2: Convert to fraction form
    190,430.47/285,685.76 = 72,099.19/x
  3. Step 3: Cross multiply
    190,430.47x = 285,685.76 × 72,099.19
  4. Step 4: Simplify right side
    190,430.47x = 20,597,711,890.53
  5. Step 5: Solve for x
    x = 20,597,711,890.53/190,430.47
  6. Step 6: Final answer
    x = 108,163.95

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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.