Home / 128,380,484.03-177,165,409.37-69,643,149.15

Finding the Fourth Proportional to 128,380,484.03, 177,165,409.37 and 69,643,149.15

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Solution

The fourth proportional to 128,380,484.03, 177,165,409.37 and 69,643,149.15 is: 96,107,731.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,380,484.03 : 177,165,409.37 = 69,643,149.15 : x
  2. Step 2: Convert to fraction form
    128,380,484.03/177,165,409.37 = 69,643,149.15/x
  3. Step 3: Cross multiply
    128,380,484.03x = 177,165,409.37 × 69,643,149.15
  4. Step 4: Simplify right side
    128,380,484.03x = 12,338,357,029,355,496
  5. Step 5: Solve for x
    x = 12,338,357,029,355,496/128,380,484.03
  6. Step 6: Final answer
    x = 96,107,731.03

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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.