Home / 100,031.84-138,116.23-61,843.75

Finding the Fourth Proportional to 100,031.84, 138,116.23 and 61,843.75

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Solution

The fourth proportional to 100,031.84, 138,116.23 and 61,843.75 is: 85,389.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,031.84 : 138,116.23 = 61,843.75 : x
  2. Step 2: Convert to fraction form
    100,031.84/138,116.23 = 61,843.75/x
  3. Step 3: Cross multiply
    100,031.84x = 138,116.23 × 61,843.75
  4. Step 4: Simplify right side
    100,031.84x = 8,541,624,915.08
  5. Step 5: Solve for x
    x = 8,541,624,915.08/100,031.84
  6. Step 6: Final answer
    x = 85,389.06

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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.