Home / 143,556.40-215,334.60-91,025.20

Finding the Fourth Proportional to 143,556.40, 215,334.60 and 91,025.20

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Solution

The fourth proportional to 143,556.40, 215,334.60 and 91,025.20 is: 136,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,556.40 : 215,334.60 = 91,025.20 : x
  2. Step 2: Convert to fraction form
    143,556.40/215,334.60 = 91,025.20/x
  3. Step 3: Cross multiply
    143,556.40x = 215,334.60 × 91,025.20
  4. Step 4: Simplify right side
    143,556.40x = 19,600,875,031.92
  5. Step 5: Solve for x
    x = 19,600,875,031.92/143,556.40
  6. Step 6: Final answer
    x = 136,537.80

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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.