Home / 115,328.22-158,916.78-85,065.60

Finding the Fourth Proportional to 115,328.22, 158,916.78 and 85,065.60

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Solution

The fourth proportional to 115,328.22, 158,916.78 and 85,065.60 is: 117,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,328.22 : 158,916.78 = 85,065.60 : x
  2. Step 2: Convert to fraction form
    115,328.22/158,916.78 = 85,065.60/x
  3. Step 3: Cross multiply
    115,328.22x = 158,916.78 × 85,065.60
  4. Step 4: Simplify right side
    115,328.22x = 13,518,351,240.77
  5. Step 5: Solve for x
    x = 13,518,351,240.77/115,328.22
  6. Step 6: Final answer
    x = 117,216.33

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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.