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Finding the Fourth Proportional to 88,109.58, 121,501.85 and 75,404.94

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Solution

The fourth proportional to 88,109.58, 121,501.85 and 75,404.94 is: 103,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,109.58 : 121,501.85 = 75,404.94 : x
  2. Step 2: Convert to fraction form
    88,109.58/121,501.85 = 75,404.94/x
  3. Step 3: Cross multiply
    88,109.58x = 121,501.85 × 75,404.94
  4. Step 4: Simplify right side
    88,109.58x = 9,161,839,709.14
  5. Step 5: Solve for x
    x = 9,161,839,709.14/88,109.58
  6. Step 6: Final answer
    x = 103,982.33

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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.