Home / 103,665.46-155,309.56-72,008.64

Finding the Fourth Proportional to 103,665.46, 155,309.56 and 72,008.64

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Solution

The fourth proportional to 103,665.46, 155,309.56 and 72,008.64 is: 107,881.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,665.46 : 155,309.56 = 72,008.64 : x
  2. Step 2: Convert to fraction form
    103,665.46/155,309.56 = 72,008.64/x
  3. Step 3: Cross multiply
    103,665.46x = 155,309.56 × 72,008.64
  4. Step 4: Simplify right side
    103,665.46x = 11,183,630,194.60
  5. Step 5: Solve for x
    x = 11,183,630,194.60/103,665.46
  6. Step 6: Final answer
    x = 107,881.93

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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.