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Finding the Fourth Proportional to 135,656.80, 203,501.52 and 65,486.80

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Solution

The fourth proportional to 135,656.80, 203,501.52 and 65,486.80 is: 98,238.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,656.80 : 203,501.52 = 65,486.80 : x
  2. Step 2: Convert to fraction form
    135,656.80/203,501.52 = 65,486.80/x
  3. Step 3: Cross multiply
    135,656.80x = 203,501.52 × 65,486.80
  4. Step 4: Simplify right side
    135,656.80x = 13,326,663,339.94
  5. Step 5: Solve for x
    x = 13,326,663,339.94/135,656.80
  6. Step 6: Final answer
    x = 98,238.08

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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.