Home / 127,642,421.09-176,153,086.56-78,067,223.96

Finding the Fourth Proportional to 127,642,421.09, 176,153,086.56 and 78,067,223.96

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Solution

The fourth proportional to 127,642,421.09, 176,153,086.56 and 78,067,223.96 is: 107,736,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,642,421.09 : 176,153,086.56 = 78,067,223.96 : x
  2. Step 2: Convert to fraction form
    127,642,421.09/176,153,086.56 = 78,067,223.96/x
  3. Step 3: Cross multiply
    127,642,421.09x = 176,153,086.56 × 78,067,223.96
  4. Step 4: Simplify right side
    127,642,421.09x = 13,751,782,459,136,772
  5. Step 5: Solve for x
    x = 13,751,782,459,136,772/127,642,421.09
  6. Step 6: Final answer
    x = 107,736,772.32

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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.