Home / 190,211.40-285,300.60-115,309.50

Finding the Fourth Proportional to 190,211.40, 285,300.60 and 115,309.50

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Solution

The fourth proportional to 190,211.40, 285,300.60 and 115,309.50 is: 172,954.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,211.40 : 285,300.60 = 115,309.50 : x
  2. Step 2: Convert to fraction form
    190,211.40/285,300.60 = 115,309.50/x
  3. Step 3: Cross multiply
    190,211.40x = 285,300.60 × 115,309.50
  4. Step 4: Simplify right side
    190,211.40x = 32,897,869,535.70
  5. Step 5: Solve for x
    x = 32,897,869,535.70/190,211.40
  6. Step 6: Final answer
    x = 172,954.25

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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.