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Finding the Fourth Proportional to 98,215.75, 135,537.78 and 53,503.75

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Solution

The fourth proportional to 98,215.75, 135,537.78 and 53,503.75 is: 73,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,215.75 : 135,537.78 = 53,503.75 : x
  2. Step 2: Convert to fraction form
    98,215.75/135,537.78 = 53,503.75/x
  3. Step 3: Cross multiply
    98,215.75x = 135,537.78 × 53,503.75
  4. Step 4: Simplify right side
    98,215.75x = 7,251,779,496.68
  5. Step 5: Solve for x
    x = 7,251,779,496.68/98,215.75
  6. Step 6: Final answer
    x = 73,835.20

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1.5x scale

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.