Home / 127,939,728.40-191,909,592.60-104,981,477.20

Finding the Fourth Proportional to 127,939,728.40, 191,909,592.60 and 104,981,477.20

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Solution

The fourth proportional to 127,939,728.40, 191,909,592.60 and 104,981,477.20 is: 157,472,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939,728.40 : 191,909,592.60 = 104,981,477.20 : x
  2. Step 2: Convert to fraction form
    127,939,728.40/191,909,592.60 = 104,981,477.20/x
  3. Step 3: Cross multiply
    127,939,728.40x = 191,909,592.60 × 104,981,477.20
  4. Step 4: Simplify right side
    127,939,728.40x = 20,146,952,519,998,188
  5. Step 5: Solve for x
    x = 20,146,952,519,998,188/127,939,728.40
  6. Step 6: Final answer
    x = 157,472,215.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.