Home / 84,915.67-117,303.20-80,431.63

Finding the Fourth Proportional to 84,915.67, 117,303.20 and 80,431.63

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Solution

The fourth proportional to 84,915.67, 117,303.20 and 80,431.63 is: 111,108.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,915.67 : 117,303.20 = 80,431.63 : x
  2. Step 2: Convert to fraction form
    84,915.67/117,303.20 = 80,431.63/x
  3. Step 3: Cross multiply
    84,915.67x = 117,303.20 × 80,431.63
  4. Step 4: Simplify right side
    84,915.67x = 9,434,887,959.36
  5. Step 5: Solve for x
    x = 9,434,887,959.36/84,915.67
  6. Step 6: Final answer
    x = 111,108.92

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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.