Home / 86,152.26-129,211.36-81,880.04

Finding the Fourth Proportional to 86,152.26, 129,211.36 and 81,880.04

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Solution

The fourth proportional to 86,152.26, 129,211.36 and 81,880.04 is: 122,803.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,152.26 : 129,211.36 = 81,880.04 : x
  2. Step 2: Convert to fraction form
    86,152.26/129,211.36 = 81,880.04/x
  3. Step 3: Cross multiply
    86,152.26x = 129,211.36 × 81,880.04
  4. Step 4: Simplify right side
    86,152.26x = 10,579,831,443.58
  5. Step 5: Solve for x
    x = 10,579,831,443.58/86,152.26
  6. Step 6: Final answer
    x = 122,803.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.