Home / 190,085.10-285,127.65-120,273.90

Finding the Fourth Proportional to 190,085.10, 285,127.65 and 120,273.90

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Solution

The fourth proportional to 190,085.10, 285,127.65 and 120,273.90 is: 180,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,085.10 : 285,127.65 = 120,273.90 : x
  2. Step 2: Convert to fraction form
    190,085.10/285,127.65 = 120,273.90/x
  3. Step 3: Cross multiply
    190,085.10x = 285,127.65 × 120,273.90
  4. Step 4: Simplify right side
    190,085.10x = 34,293,414,463.34
  5. Step 5: Solve for x
    x = 34,293,414,463.34/190,085.10
  6. Step 6: Final answer
    x = 180,410.85

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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.