Home / 128,380,485.03-177,165,410.75-69,643,150.15

Finding the Fourth Proportional to 128,380,485.03, 177,165,410.75 and 69,643,150.15

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Solution

The fourth proportional to 128,380,485.03, 177,165,410.75 and 69,643,150.15 is: 96,107,732.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,380,485.03 : 177,165,410.75 = 69,643,150.15 : x
  2. Step 2: Convert to fraction form
    128,380,485.03/177,165,410.75 = 69,643,150.15/x
  3. Step 3: Cross multiply
    128,380,485.03x = 177,165,410.75 × 69,643,150.15
  4. Step 4: Simplify right side
    128,380,485.03x = 12,338,357,302,248,676
  5. Step 5: Solve for x
    x = 12,338,357,302,248,676/128,380,485.03
  6. Step 6: Final answer
    x = 96,107,732.41

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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.