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Finding the Fourth Proportional to 115,987.75, 160,063.40 and 67,618.41

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Solution

The fourth proportional to 115,987.75, 160,063.40 and 67,618.41 is: 93,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,987.75 : 160,063.40 = 67,618.41 : x
  2. Step 2: Convert to fraction form
    115,987.75/160,063.40 = 67,618.41/x
  3. Step 3: Cross multiply
    115,987.75x = 160,063.40 × 67,618.41
  4. Step 4: Simplify right side
    115,987.75x = 10,823,232,607.19
  5. Step 5: Solve for x
    x = 10,823,232,607.19/115,987.75
  6. Step 6: Final answer
    x = 93,313.58

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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.