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Finding the Fourth Proportional to 103,805.16, 155,629.28 and 43,852.20

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Solution

The fourth proportional to 103,805.16, 155,629.28 and 43,852.20 is: 65,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,805.16 : 155,629.28 = 43,852.20 : x
  2. Step 2: Convert to fraction form
    103,805.16/155,629.28 = 43,852.20/x
  3. Step 3: Cross multiply
    103,805.16x = 155,629.28 × 43,852.20
  4. Step 4: Simplify right side
    103,805.16x = 6,824,686,312.42
  5. Step 5: Solve for x
    x = 6,824,686,312.42/103,805.16
  6. Step 6: Final answer
    x = 65,745.15

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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.