Home / 190,689.63-285,993.95-72,319.47

Finding the Fourth Proportional to 190,689.63, 285,993.95 and 72,319.47

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Solution

The fourth proportional to 190,689.63, 285,993.95 and 72,319.47 is: 108,463.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,689.63 : 285,993.95 = 72,319.47 : x
  2. Step 2: Convert to fraction form
    190,689.63/285,993.95 = 72,319.47/x
  3. Step 3: Cross multiply
    190,689.63x = 285,993.95 × 72,319.47
  4. Step 4: Simplify right side
    190,689.63x = 20,682,930,525.61
  5. Step 5: Solve for x
    x = 20,682,930,525.61/190,689.63
  6. Step 6: Final answer
    x = 108,463.85

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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.