Home / 100,427.12-150,641.76-30,307.04

Finding the Fourth Proportional to 100,427.12, 150,641.76 and 30,307.04

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Solution

The fourth proportional to 100,427.12, 150,641.76 and 30,307.04 is: 45,460.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,427.12 : 150,641.76 = 30,307.04 : x
  2. Step 2: Convert to fraction form
    100,427.12/150,641.76 = 30,307.04/x
  3. Step 3: Cross multiply
    100,427.12x = 150,641.76 × 30,307.04
  4. Step 4: Simplify right side
    100,427.12x = 4,565,505,845.99
  5. Step 5: Solve for x
    x = 4,565,505,845.99/100,427.12
  6. Step 6: Final answer
    x = 45,460.89

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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.