Home / 128,430,661.32-177,234,794.38-69,693,338.59

Finding the Fourth Proportional to 128,430,661.32, 177,234,794.38 and 69,693,338.59

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Solution

The fourth proportional to 128,430,661.32, 177,234,794.38 and 69,693,338.59 is: 96,177,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,430,661.32 : 177,234,794.38 = 69,693,338.59 : x
  2. Step 2: Convert to fraction form
    128,430,661.32/177,234,794.38 = 69,693,338.59/x
  3. Step 3: Cross multiply
    128,430,661.32x = 177,234,794.38 × 69,693,338.59
  4. Step 4: Simplify right side
    128,430,661.32x = 12,352,084,534,298,400
  5. Step 5: Solve for x
    x = 12,352,084,534,298,400/128,430,661.32
  6. Step 6: Final answer
    x = 96,177,068.68

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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.