Home / 143,763.06-198,388.45-90,077.07

Finding the Fourth Proportional to 143,763.06, 198,388.45 and 90,077.07

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Solution

The fourth proportional to 143,763.06, 198,388.45 and 90,077.07 is: 124,303.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,763.06 : 198,388.45 = 90,077.07 : x
  2. Step 2: Convert to fraction form
    143,763.06/198,388.45 = 90,077.07/x
  3. Step 3: Cross multiply
    143,763.06x = 198,388.45 × 90,077.07
  4. Step 4: Simplify right side
    143,763.06x = 17,870,250,297.84
  5. Step 5: Solve for x
    x = 17,870,250,297.84/143,763.06
  6. Step 6: Final answer
    x = 124,303.49

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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.