Home / 130,607.64-180,033.84-85,205.52

Finding the Fourth Proportional to 130,607.64, 180,033.84 and 85,205.52

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Solution

The fourth proportional to 130,607.64, 180,033.84 and 85,205.52 is: 117,450.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,607.64 : 180,033.84 = 85,205.52 : x
  2. Step 2: Convert to fraction form
    130,607.64/180,033.84 = 85,205.52/x
  3. Step 3: Cross multiply
    130,607.64x = 180,033.84 × 85,205.52
  4. Step 4: Simplify right side
    130,607.64x = 15,339,876,954.80
  5. Step 5: Solve for x
    x = 15,339,876,954.80/130,607.64
  6. Step 6: Final answer
    x = 117,450.07

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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.