Home / 103,515.80-155,040.42-61,875.32

Finding the Fourth Proportional to 103,515.80, 155,040.42 and 61,875.32

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Solution

The fourth proportional to 103,515.80, 155,040.42 and 61,875.32 is: 92,673.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.80 : 155,040.42 = 61,875.32 : x
  2. Step 2: Convert to fraction form
    103,515.80/155,040.42 = 61,875.32/x
  3. Step 3: Cross multiply
    103,515.80x = 155,040.42 × 61,875.32
  4. Step 4: Simplify right side
    103,515.80x = 9,593,175,600.43
  5. Step 5: Solve for x
    x = 9,593,175,600.43/103,515.80
  6. Step 6: Final answer
    x = 92,673.54

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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.