Home / 109,915.66-164,889.89-39,778.57

Finding the Fourth Proportional to 109,915.66, 164,889.89 and 39,778.57

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Solution

The fourth proportional to 109,915.66, 164,889.89 and 39,778.57 is: 59,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,915.66 : 164,889.89 = 39,778.57 : x
  2. Step 2: Convert to fraction form
    109,915.66/164,889.89 = 39,778.57/x
  3. Step 3: Cross multiply
    109,915.66x = 164,889.89 × 39,778.57
  4. Step 4: Simplify right side
    109,915.66x = 6,559,084,031.66
  5. Step 5: Solve for x
    x = 6,559,084,031.66/109,915.66
  6. Step 6: Final answer
    x = 59,673.79

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1.5x scale

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.