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Finding the Fourth Proportional to 101,539.08, 140,129.09 and 56,222.04

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Solution

The fourth proportional to 101,539.08, 140,129.09 and 56,222.04 is: 77,589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,539.08 : 140,129.09 = 56,222.04 : x
  2. Step 2: Convert to fraction form
    101,539.08/140,129.09 = 56,222.04/x
  3. Step 3: Cross multiply
    101,539.08x = 140,129.09 × 56,222.04
  4. Step 4: Simplify right side
    101,539.08x = 7,878,343,303.14
  5. Step 5: Solve for x
    x = 7,878,343,303.14/101,539.08
  6. Step 6: Final answer
    x = 77,589.27

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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.