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Finding the Fourth Proportional to 103,407.06, 155,241.84 and 87,923.10

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Solution

The fourth proportional to 103,407.06, 155,241.84 and 87,923.10 is: 131,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,407.06 : 155,241.84 = 87,923.10 : x
  2. Step 2: Convert to fraction form
    103,407.06/155,241.84 = 87,923.10/x
  3. Step 3: Cross multiply
    103,407.06x = 155,241.84 × 87,923.10
  4. Step 4: Simplify right side
    103,407.06x = 13,649,343,822.50
  5. Step 5: Solve for x
    x = 13,649,343,822.50/103,407.06
  6. Step 6: Final answer
    x = 131,996.25

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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.