Home / 128,858.50-177,902.49-84,224.26

Finding the Fourth Proportional to 128,858.50, 177,902.49 and 84,224.26

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Solution

The fourth proportional to 128,858.50, 177,902.49 and 84,224.26 is: 116,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,858.50 : 177,902.49 = 84,224.26 : x
  2. Step 2: Convert to fraction form
    128,858.50/177,902.49 = 84,224.26/x
  3. Step 3: Cross multiply
    128,858.50x = 177,902.49 × 84,224.26
  4. Step 4: Simplify right side
    128,858.50x = 14,983,705,572.41
  5. Step 5: Solve for x
    x = 14,983,705,572.41/128,858.50
  6. Step 6: Final answer
    x = 116,280.30

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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.