Home / 128,534.43-177,379.33-74,056.49

Finding the Fourth Proportional to 128,534.43, 177,379.33 and 74,056.49

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Solution

The fourth proportional to 128,534.43, 177,379.33 and 74,056.49 is: 102,199.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,534.43 : 177,379.33 = 74,056.49 : x
  2. Step 2: Convert to fraction form
    128,534.43/177,379.33 = 74,056.49/x
  3. Step 3: Cross multiply
    128,534.43x = 177,379.33 × 74,056.49
  4. Step 4: Simplify right side
    128,534.43x = 13,136,090,836.66
  5. Step 5: Solve for x
    x = 13,136,090,836.66/128,534.43
  6. Step 6: Final answer
    x = 102,199.00

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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.