Home / 128,782,102.14-177,660,675.27-76,541,448.06

Finding the Fourth Proportional to 128,782,102.14, 177,660,675.27 and 76,541,448.06

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Solution

The fourth proportional to 128,782,102.14, 177,660,675.27 and 76,541,448.06 is: 105,592,354.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,782,102.14 : 177,660,675.27 = 76,541,448.06 : x
  2. Step 2: Convert to fraction form
    128,782,102.14/177,660,675.27 = 76,541,448.06/x
  3. Step 3: Cross multiply
    128,782,102.14x = 177,660,675.27 × 76,541,448.06
  4. Step 4: Simplify right side
    128,782,102.14x = 13,598,405,348,483,232
  5. Step 5: Solve for x
    x = 13,598,405,348,483,232/128,782,102.14
  6. Step 6: Final answer
    x = 105,592,354.24

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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.