Home / 103,512.09-155,157.42-53,541.90

Finding the Fourth Proportional to 103,512.09, 155,157.42 and 53,541.90

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Solution

The fourth proportional to 103,512.09, 155,157.42 and 53,541.90 is: 80,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,512.09 : 155,157.42 = 53,541.90 : x
  2. Step 2: Convert to fraction form
    103,512.09/155,157.42 = 53,541.90/x
  3. Step 3: Cross multiply
    103,512.09x = 155,157.42 × 53,541.90
  4. Step 4: Simplify right side
    103,512.09x = 8,307,423,065.90
  5. Step 5: Solve for x
    x = 8,307,423,065.90/103,512.09
  6. Step 6: Final answer
    x = 80,255.58

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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.