Home / 128,328.96-192,445.44-44,065.20

Finding the Fourth Proportional to 128,328.96, 192,445.44 and 44,065.20

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Solution

The fourth proportional to 128,328.96, 192,445.44 and 44,065.20 is: 66,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,328.96 : 192,445.44 = 44,065.20 : x
  2. Step 2: Convert to fraction form
    128,328.96/192,445.44 = 44,065.20/x
  3. Step 3: Cross multiply
    128,328.96x = 192,445.44 × 44,065.20
  4. Step 4: Simplify right side
    128,328.96x = 8,480,146,802.69
  5. Step 5: Solve for x
    x = 8,480,146,802.69/128,328.96
  6. Step 6: Final answer
    x = 66,081.32

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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.