Home / 149,231.45-205,947-84,705.23

Finding the Fourth Proportional to 149,231.45, 205,947 and 84,705.23

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Solution

The fourth proportional to 149,231.45, 205,947 and 84,705.23 is: 116,897.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,231.45 : 205,947 = 84,705.23 : x
  2. Step 2: Convert to fraction form
    149,231.45/205,947 = 84,705.23/x
  3. Step 3: Cross multiply
    149,231.45x = 205,947 × 84,705.23
  4. Step 4: Simplify right side
    149,231.45x = 17,444,786,973.08
  5. Step 5: Solve for x
    x = 17,444,786,973.08/149,231.45
  6. Step 6: Final answer
    x = 116,897.53

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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.