Home / 190,110.60-285,165.90-115,315.20

Finding the Fourth Proportional to 190,110.60, 285,165.90 and 115,315.20

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Solution

The fourth proportional to 190,110.60, 285,165.90 and 115,315.20 is: 172,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,110.60 : 285,165.90 = 115,315.20 : x
  2. Step 2: Convert to fraction form
    190,110.60/285,165.90 = 115,315.20/x
  3. Step 3: Cross multiply
    190,110.60x = 285,165.90 × 115,315.20
  4. Step 4: Simplify right side
    190,110.60x = 32,883,962,791.68
  5. Step 5: Solve for x
    x = 32,883,962,791.68/190,110.60
  6. Step 6: Final answer
    x = 172,972.80

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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.