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Finding the Fourth Proportional to 190,677.71, 285,950.95 and 72,382.88

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Solution

The fourth proportional to 190,677.71, 285,950.95 and 72,382.88 is: 108,549.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,677.71 : 285,950.95 = 72,382.88 : x
  2. Step 2: Convert to fraction form
    190,677.71/285,950.95 = 72,382.88/x
  3. Step 3: Cross multiply
    190,677.71x = 285,950.95 × 72,382.88
  4. Step 4: Simplify right side
    190,677.71x = 20,697,953,299.74
  5. Step 5: Solve for x
    x = 20,697,953,299.74/190,677.71
  6. Step 6: Final answer
    x = 108,549.41

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1.5x scale

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.