Home / 155,389,721.36-214,437,067.81-85,774,493.30

Finding the Fourth Proportional to 155,389,721.36, 214,437,067.81 and 85,774,493.30

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Solution

The fourth proportional to 155,389,721.36, 214,437,067.81 and 85,774,493.30 is: 118,368,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,389,721.36 : 214,437,067.81 = 85,774,493.30 : x
  2. Step 2: Convert to fraction form
    155,389,721.36/214,437,067.81 = 85,774,493.30/x
  3. Step 3: Cross multiply
    155,389,721.36x = 214,437,067.81 × 85,774,493.30
  4. Step 4: Simplify right side
    155,389,721.36x = 18,393,230,834,853,868
  5. Step 5: Solve for x
    x = 18,393,230,834,853,868/155,389,721.36
  6. Step 6: Final answer
    x = 118,368,388.04

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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.