Home / 190,987.76-286,530.33-89,766.21

Finding the Fourth Proportional to 190,987.76, 286,530.33 and 89,766.21

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Solution

The fourth proportional to 190,987.76, 286,530.33 and 89,766.21 is: 134,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,987.76 : 286,530.33 = 89,766.21 : x
  2. Step 2: Convert to fraction form
    190,987.76/286,530.33 = 89,766.21/x
  3. Step 3: Cross multiply
    190,987.76x = 286,530.33 × 89,766.21
  4. Step 4: Simplify right side
    190,987.76x = 25,720,741,774.15
  5. Step 5: Solve for x
    x = 25,720,741,774.15/190,987.76
  6. Step 6: Final answer
    x = 134,672.20

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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.