Home / 118,138.95-163,028.79-64,425

Finding the Fourth Proportional to 118,138.95, 163,028.79 and 64,425

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Solution

The fourth proportional to 118,138.95, 163,028.79 and 64,425 is: 88,904.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,138.95 : 163,028.79 = 64,425 : x
  2. Step 2: Convert to fraction form
    118,138.95/163,028.79 = 64,425/x
  3. Step 3: Cross multiply
    118,138.95x = 163,028.79 × 64,425
  4. Step 4: Simplify right side
    118,138.95x = 10,503,129,795.75
  5. Step 5: Solve for x
    x = 10,503,129,795.75/118,138.95
  6. Step 6: Final answer
    x = 88,904.89

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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.