Home / 103,440.90-155,161.35-41,111.40

Finding the Fourth Proportional to 103,440.90, 155,161.35 and 41,111.40

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Solution

The fourth proportional to 103,440.90, 155,161.35 and 41,111.40 is: 61,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,440.90 : 155,161.35 = 41,111.40 : x
  2. Step 2: Convert to fraction form
    103,440.90/155,161.35 = 41,111.40/x
  3. Step 3: Cross multiply
    103,440.90x = 155,161.35 × 41,111.40
  4. Step 4: Simplify right side
    103,440.90x = 6,378,900,324.39
  5. Step 5: Solve for x
    x = 6,378,900,324.39/103,440.90
  6. Step 6: Final answer
    x = 61,667.10

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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.