Home / 103,615.12-155,422.70-28,735.27

Finding the Fourth Proportional to 103,615.12, 155,422.70 and 28,735.27

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Solution

The fourth proportional to 103,615.12, 155,422.70 and 28,735.27 is: 43,102.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.12 : 155,422.70 = 28,735.27 : x
  2. Step 2: Convert to fraction form
    103,615.12/155,422.70 = 28,735.27/x
  3. Step 3: Cross multiply
    103,615.12x = 155,422.70 × 28,735.27
  4. Step 4: Simplify right side
    103,615.12x = 4,466,113,248.63
  5. Step 5: Solve for x
    x = 4,466,113,248.63/103,615.12
  6. Step 6: Final answer
    x = 43,102.91

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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.