Home / 154,915.31-213,384.84-109,515.22

Finding the Fourth Proportional to 154,915.31, 213,384.84 and 109,515.22

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Solution

The fourth proportional to 154,915.31, 213,384.84 and 109,515.22 is: 150,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,915.31 : 213,384.84 = 109,515.22 : x
  2. Step 2: Convert to fraction form
    154,915.31/213,384.84 = 109,515.22/x
  3. Step 3: Cross multiply
    154,915.31x = 213,384.84 × 109,515.22
  4. Step 4: Simplify right side
    154,915.31x = 23,368,887,697.26
  5. Step 5: Solve for x
    x = 23,368,887,697.26/154,915.31
  6. Step 6: Final answer
    x = 150,849.44

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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.