Home / 103,970.21-155,965.13-29,090.36

Finding the Fourth Proportional to 103,970.21, 155,965.13 and 29,090.36

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Solution

The fourth proportional to 103,970.21, 155,965.13 and 29,090.36 is: 43,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,970.21 : 155,965.13 = 29,090.36 : x
  2. Step 2: Convert to fraction form
    103,970.21/155,965.13 = 29,090.36/x
  3. Step 3: Cross multiply
    103,970.21x = 155,965.13 × 29,090.36
  4. Step 4: Simplify right side
    103,970.21x = 4,537,080,853.87
  5. Step 5: Solve for x
    x = 4,537,080,853.87/103,970.21
  6. Step 6: Final answer
    x = 43,638.28

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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.