Home / 128,443.74-177,259.23-71,845.26

Finding the Fourth Proportional to 128,443.74, 177,259.23 and 71,845.26

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Solution

The fourth proportional to 128,443.74, 177,259.23 and 71,845.26 is: 99,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,443.74 : 177,259.23 = 71,845.26 : x
  2. Step 2: Convert to fraction form
    128,443.74/177,259.23 = 71,845.26/x
  3. Step 3: Cross multiply
    128,443.74x = 177,259.23 × 71,845.26
  4. Step 4: Simplify right side
    128,443.74x = 12,735,235,466.75
  5. Step 5: Solve for x
    x = 12,735,235,466.75/128,443.74
  6. Step 6: Final answer
    x = 99,150.30

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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.