Home / 190,212.40-285,302.10-115,310.50

Finding the Fourth Proportional to 190,212.40, 285,302.10 and 115,310.50

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Solution

The fourth proportional to 190,212.40, 285,302.10 and 115,310.50 is: 172,955.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,212.40 : 285,302.10 = 115,310.50 : x
  2. Step 2: Convert to fraction form
    190,212.40/285,302.10 = 115,310.50/x
  3. Step 3: Cross multiply
    190,212.40x = 285,302.10 × 115,310.50
  4. Step 4: Simplify right side
    190,212.40x = 32,898,327,802.05
  5. Step 5: Solve for x
    x = 32,898,327,802.05/190,212.40
  6. Step 6: Final answer
    x = 172,955.75

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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.