Home / 143,430.40-215,145.60-90,899.20

Finding the Fourth Proportional to 143,430.40, 215,145.60 and 90,899.20

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Solution

The fourth proportional to 143,430.40, 215,145.60 and 90,899.20 is: 136,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,430.40 : 215,145.60 = 90,899.20 : x
  2. Step 2: Convert to fraction form
    143,430.40/215,145.60 = 90,899.20/x
  3. Step 3: Cross multiply
    143,430.40x = 215,145.60 × 90,899.20
  4. Step 4: Simplify right side
    143,430.40x = 19,556,562,923.52
  5. Step 5: Solve for x
    x = 19,556,562,923.52/143,430.40
  6. Step 6: Final answer
    x = 136,348.80

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