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Finding the Fourth Proportional to 161,763.40, 242,645.10 and 91,779.40

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Solution

The fourth proportional to 161,763.40, 242,645.10 and 91,779.40 is: 137,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,763.40 : 242,645.10 = 91,779.40 : x
  2. Step 2: Convert to fraction form
    161,763.40/242,645.10 = 91,779.40/x
  3. Step 3: Cross multiply
    161,763.40x = 242,645.10 × 91,779.40
  4. Step 4: Simplify right side
    161,763.40x = 22,269,821,690.94
  5. Step 5: Solve for x
    x = 22,269,821,690.94/161,763.40
  6. Step 6: Final answer
    x = 137,669.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.