Home / 128,848.40-193,272.60-76,230.80

Finding the Fourth Proportional to 128,848.40, 193,272.60 and 76,230.80

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Solution

The fourth proportional to 128,848.40, 193,272.60 and 76,230.80 is: 114,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,848.40 : 193,272.60 = 76,230.80 : x
  2. Step 2: Convert to fraction form
    128,848.40/193,272.60 = 76,230.80/x
  3. Step 3: Cross multiply
    128,848.40x = 193,272.60 × 76,230.80
  4. Step 4: Simplify right side
    128,848.40x = 14,733,324,916.08
  5. Step 5: Solve for x
    x = 14,733,324,916.08/128,848.40
  6. Step 6: Final answer
    x = 114,346.20

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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.