Home / 128,332,252.35-177,105,998.59-72,582,615.23

Finding the Fourth Proportional to 128,332,252.35, 177,105,998.59 and 72,582,615.23

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Solution

The fourth proportional to 128,332,252.35, 177,105,998.59 and 72,582,615.23 is: 100,168,245.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,332,252.35 : 177,105,998.59 = 72,582,615.23 : x
  2. Step 2: Convert to fraction form
    128,332,252.35/177,105,998.59 = 72,582,615.23/x
  3. Step 3: Cross multiply
    128,332,252.35x = 177,105,998.59 × 72,582,615.23
  4. Step 4: Simplify right side
    128,332,252.35x = 12,854,816,549,515,906
  5. Step 5: Solve for x
    x = 12,854,816,549,515,906/128,332,252.35
  6. Step 6: Final answer
    x = 100,168,245.43

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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.