Home / 132,669.60-199,004.40-90,679.20

Finding the Fourth Proportional to 132,669.60, 199,004.40 and 90,679.20

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Solution

The fourth proportional to 132,669.60, 199,004.40 and 90,679.20 is: 136,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,669.60 : 199,004.40 = 90,679.20 : x
  2. Step 2: Convert to fraction form
    132,669.60/199,004.40 = 90,679.20/x
  3. Step 3: Cross multiply
    132,669.60x = 199,004.40 × 90,679.20
  4. Step 4: Simplify right side
    132,669.60x = 18,045,559,788.48
  5. Step 5: Solve for x
    x = 18,045,559,788.48/132,669.60
  6. Step 6: Final answer
    x = 136,018.80

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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.