Home / 190,090,131.75-285,255,141-80,915,124.57

Finding the Fourth Proportional to 190,090,131.75, 285,255,141 and 80,915,124.57

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Solution

The fourth proportional to 190,090,131.75, 285,255,141 and 80,915,124.57 is: 121,423,742.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,090,131.75 : 285,255,141 = 80,915,124.57 : x
  2. Step 2: Convert to fraction form
    190,090,131.75/285,255,141 = 80,915,124.57/x
  3. Step 3: Cross multiply
    190,090,131.75x = 285,255,141 × 80,915,124.57
  4. Step 4: Simplify right side
    190,090,131.75x = 23,081,455,268,247,912
  5. Step 5: Solve for x
    x = 23,081,455,268,247,912/190,090,131.75
  6. Step 6: Final answer
    x = 121,423,742.81

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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.