Home / 128,527.88-177,368.33-71,939.26

Finding the Fourth Proportional to 128,527.88, 177,368.33 and 71,939.26

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Solution

The fourth proportional to 128,527.88, 177,368.33 and 71,939.26 is: 99,276.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,527.88 : 177,368.33 = 71,939.26 : x
  2. Step 2: Convert to fraction form
    128,527.88/177,368.33 = 71,939.26/x
  3. Step 3: Cross multiply
    128,527.88x = 177,368.33 × 71,939.26
  4. Step 4: Simplify right side
    128,527.88x = 12,759,745,811.50
  5. Step 5: Solve for x
    x = 12,759,745,811.50/128,527.88
  6. Step 6: Final answer
    x = 99,276.09

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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.