Home / 103,921.93-155,820.40-40,666.60

Finding the Fourth Proportional to 103,921.93, 155,820.40 and 40,666.60

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Solution

The fourth proportional to 103,921.93, 155,820.40 and 40,666.60 is: 60,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,921.93 : 155,820.40 = 40,666.60 : x
  2. Step 2: Convert to fraction form
    103,921.93/155,820.40 = 40,666.60/x
  3. Step 3: Cross multiply
    103,921.93x = 155,820.40 × 40,666.60
  4. Step 4: Simplify right side
    103,921.93x = 6,336,685,878.64
  5. Step 5: Solve for x
    x = 6,336,685,878.64/103,921.93
  6. Step 6: Final answer
    x = 60,975.44

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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.