Home / 103,205.15-142,291.27-66,842.35

Finding the Fourth Proportional to 103,205.15, 142,291.27 and 66,842.35

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Solution

The fourth proportional to 103,205.15, 142,291.27 and 66,842.35 is: 92,157.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,205.15 : 142,291.27 = 66,842.35 : x
  2. Step 2: Convert to fraction form
    103,205.15/142,291.27 = 66,842.35/x
  3. Step 3: Cross multiply
    103,205.15x = 142,291.27 × 66,842.35
  4. Step 4: Simplify right side
    103,205.15x = 9,511,082,871.28
  5. Step 5: Solve for x
    x = 9,511,082,871.28/103,205.15
  6. Step 6: Final answer
    x = 92,157.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.