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Finding the Fourth Proportional to 153,362.03, 211,635.48 and 85,379.01

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Solution

The fourth proportional to 153,362.03, 211,635.48 and 85,379.01 is: 117,820.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,362.03 : 211,635.48 = 85,379.01 : x
  2. Step 2: Convert to fraction form
    153,362.03/211,635.48 = 85,379.01/x
  3. Step 3: Cross multiply
    153,362.03x = 211,635.48 × 85,379.01
  4. Step 4: Simplify right side
    153,362.03x = 18,069,227,759.88
  5. Step 5: Solve for x
    x = 18,069,227,759.88/153,362.03
  6. Step 6: Final answer
    x = 117,820.74

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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.