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Finding the Fourth Proportional to 135,859.86, 203,779.98 and 42,363.18

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Solution

The fourth proportional to 135,859.86, 203,779.98 and 42,363.18 is: 63,541.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,859.86 : 203,779.98 = 42,363.18 : x
  2. Step 2: Convert to fraction form
    135,859.86/203,779.98 = 42,363.18/x
  3. Step 3: Cross multiply
    135,859.86x = 203,779.98 × 42,363.18
  4. Step 4: Simplify right side
    135,859.86x = 8,632,767,973.14
  5. Step 5: Solve for x
    x = 8,632,767,973.14/135,859.86
  6. Step 6: Final answer
    x = 63,541.71

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Why These Related Problems?

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