Home / 128,444.54-177,136.37-110,289.60

Finding the Fourth Proportional to 128,444.54, 177,136.37 and 110,289.60

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Solution

The fourth proportional to 128,444.54, 177,136.37 and 110,289.60 is: 152,099.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,444.54 : 177,136.37 = 110,289.60 : x
  2. Step 2: Convert to fraction form
    128,444.54/177,136.37 = 110,289.60/x
  3. Step 3: Cross multiply
    128,444.54x = 177,136.37 × 110,289.60
  4. Step 4: Simplify right side
    128,444.54x = 19,536,299,392.75
  5. Step 5: Solve for x
    x = 19,536,299,392.75/128,444.54
  6. Step 6: Final answer
    x = 152,099.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.