Home / 287,131.75-430,701.27-100,143.25

Finding the Fourth Proportional to 287,131.75, 430,701.27 and 100,143.25

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Solution

The fourth proportional to 287,131.75, 430,701.27 and 100,143.25 is: 150,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,131.75 : 430,701.27 = 100,143.25 : x
  2. Step 2: Convert to fraction form
    287,131.75/430,701.27 = 100,143.25/x
  3. Step 3: Cross multiply
    287,131.75x = 430,701.27 × 100,143.25
  4. Step 4: Simplify right side
    287,131.75x = 43,131,824,956.93
  5. Step 5: Solve for x
    x = 43,131,824,956.93/287,131.75
  6. Step 6: Final answer
    x = 150,216.15

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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.