Home / 190,766.88-286,038-72,446.64

Finding the Fourth Proportional to 190,766.88, 286,038 and 72,446.64

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Solution

The fourth proportional to 190,766.88, 286,038 and 72,446.64 is: 108,627.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,766.88 : 286,038 = 72,446.64 : x
  2. Step 2: Convert to fraction form
    190,766.88/286,038 = 72,446.64/x
  3. Step 3: Cross multiply
    190,766.88x = 286,038 × 72,446.64
  4. Step 4: Simplify right side
    190,766.88x = 20,722,492,012.32
  5. Step 5: Solve for x
    x = 20,722,492,012.32/190,766.88
  6. Step 6: Final answer
    x = 108,627.30

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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.