Home / 103,971.21-155,966.63-29,091.36

Finding the Fourth Proportional to 103,971.21, 155,966.63 and 29,091.36

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Solution

The fourth proportional to 103,971.21, 155,966.63 and 29,091.36 is: 43,639.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,971.21 : 155,966.63 = 29,091.36 : x
  2. Step 2: Convert to fraction form
    103,971.21/155,966.63 = 29,091.36/x
  3. Step 3: Cross multiply
    103,971.21x = 155,966.63 × 29,091.36
  4. Step 4: Simplify right side
    103,971.21x = 4,537,281,381.32
  5. Step 5: Solve for x
    x = 4,537,281,381.32/103,971.21
  6. Step 6: Final answer
    x = 43,639.79

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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.