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Finding the Fourth Proportional to 101,690.46, 140,331.06 and 56,368.26

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Solution

The fourth proportional to 101,690.46, 140,331.06 and 56,368.26 is: 77,787.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,690.46 : 140,331.06 = 56,368.26 : x
  2. Step 2: Convert to fraction form
    101,690.46/140,331.06 = 56,368.26/x
  3. Step 3: Cross multiply
    101,690.46x = 140,331.06 × 56,368.26
  4. Step 4: Simplify right side
    101,690.46x = 7,910,217,676.16
  5. Step 5: Solve for x
    x = 7,910,217,676.16/101,690.46
  6. Step 6: Final answer
    x = 77,787.22

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