Home / 128,456,955.66-177,266,090.40-69,718,438.62

Finding the Fourth Proportional to 128,456,955.66, 177,266,090.40 and 69,718,438.62

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Solution

The fourth proportional to 128,456,955.66, 177,266,090.40 and 69,718,438.62 is: 96,208,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,456,955.66 : 177,266,090.40 = 69,718,438.62 : x
  2. Step 2: Convert to fraction form
    128,456,955.66/177,266,090.40 = 69,718,438.62/x
  3. Step 3: Cross multiply
    128,456,955.66x = 177,266,090.40 × 69,718,438.62
  4. Step 4: Simplify right side
    128,456,955.66x = 12,358,715,042,959,772
  5. Step 5: Solve for x
    x = 12,358,715,042,959,772/128,456,955.66
  6. Step 6: Final answer
    x = 96,208,998.41

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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.