Home / 138,997,739.08-191,816,904.81-77,117,930.02

Finding the Fourth Proportional to 138,997,739.08, 191,816,904.81 and 77,117,930.02

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Solution

The fourth proportional to 138,997,739.08, 191,816,904.81 and 77,117,930.02 is: 106,422,757.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997,739.08 : 191,816,904.81 = 77,117,930.02 : x
  2. Step 2: Convert to fraction form
    138,997,739.08/191,816,904.81 = 77,117,930.02/x
  3. Step 3: Cross multiply
    138,997,739.08x = 191,816,904.81 × 77,117,930.02
  4. Step 4: Simplify right side
    138,997,739.08x = 14,792,522,641,790,580
  5. Step 5: Solve for x
    x = 14,792,522,641,790,580/138,997,739.08
  6. Step 6: Final answer
    x = 106,422,757.23

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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.