Home / 107,930.60-161,895.90-85,623.20

Finding the Fourth Proportional to 107,930.60, 161,895.90 and 85,623.20

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Solution

The fourth proportional to 107,930.60, 161,895.90 and 85,623.20 is: 128,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,930.60 : 161,895.90 = 85,623.20 : x
  2. Step 2: Convert to fraction form
    107,930.60/161,895.90 = 85,623.20/x
  3. Step 3: Cross multiply
    107,930.60x = 161,895.90 × 85,623.20
  4. Step 4: Simplify right side
    107,930.60x = 13,862,045,024.88
  5. Step 5: Solve for x
    x = 13,862,045,024.88/107,930.60
  6. Step 6: Final answer
    x = 128,434.80

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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.