Home / 145,958.09-219,187.26-90,128.52

Finding the Fourth Proportional to 145,958.09, 219,187.26 and 90,128.52

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Solution

The fourth proportional to 145,958.09, 219,187.26 and 90,128.52 is: 135,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,958.09 : 219,187.26 = 90,128.52 : x
  2. Step 2: Convert to fraction form
    145,958.09/219,187.26 = 90,128.52/x
  3. Step 3: Cross multiply
    145,958.09x = 219,187.26 × 90,128.52
  4. Step 4: Simplify right side
    145,958.09x = 19,755,023,346.66
  5. Step 5: Solve for x
    x = 19,755,023,346.66/145,958.09
  6. Step 6: Final answer
    x = 135,347.24

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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.