Home / 86,811.95-130,868.60-81,025.27

Finding the Fourth Proportional to 86,811.95, 130,868.60 and 81,025.27

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Solution

The fourth proportional to 86,811.95, 130,868.60 and 81,025.27 is: 122,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,811.95 : 130,868.60 = 81,025.27 : x
  2. Step 2: Convert to fraction form
    86,811.95/130,868.60 = 81,025.27/x
  3. Step 3: Cross multiply
    86,811.95x = 130,868.60 × 81,025.27
  4. Step 4: Simplify right side
    86,811.95x = 10,603,662,590.05
  5. Step 5: Solve for x
    x = 10,603,662,590.05/86,811.95
  6. Step 6: Final answer
    x = 122,145.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.