Home / 100,334.41-138,460.74-55,011.65

Finding the Fourth Proportional to 100,334.41, 138,460.74 and 55,011.65

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Solution

The fourth proportional to 100,334.41, 138,460.74 and 55,011.65 is: 75,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,334.41 : 138,460.74 = 55,011.65 : x
  2. Step 2: Convert to fraction form
    100,334.41/138,460.74 = 55,011.65/x
  3. Step 3: Cross multiply
    100,334.41x = 138,460.74 × 55,011.65
  4. Step 4: Simplify right side
    100,334.41x = 7,616,953,767.62
  5. Step 5: Solve for x
    x = 7,616,953,767.62/100,334.41
  6. Step 6: Final answer
    x = 75,915.67

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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.