Home / 128,302,488.24-191,993,997.48-111,090,070.32

Finding the Fourth Proportional to 128,302,488.24, 191,993,997.48 and 111,090,070.32

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Solution

The fourth proportional to 128,302,488.24, 191,993,997.48 and 111,090,070.32 is: 166,237,046.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,302,488.24 : 191,993,997.48 = 111,090,070.32 : x
  2. Step 2: Convert to fraction form
    128,302,488.24/191,993,997.48 = 111,090,070.32/x
  3. Step 3: Cross multiply
    128,302,488.24x = 191,993,997.48 × 111,090,070.32
  4. Step 4: Simplify right side
    128,302,488.24x = 21,328,626,681,071,100
  5. Step 5: Solve for x
    x = 21,328,626,681,071,100/128,302,488.24
  6. Step 6: Final answer
    x = 166,237,046.32

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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.