Home / 138,294,478.78-190,843,609.35-76,413,226.30

Finding the Fourth Proportional to 138,294,478.78, 190,843,609.35 and 76,413,226.30

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Solution

The fourth proportional to 138,294,478.78, 190,843,609.35 and 76,413,226.30 is: 105,448,721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,294,478.78 : 190,843,609.35 = 76,413,226.30 : x
  2. Step 2: Convert to fraction form
    138,294,478.78/190,843,609.35 = 76,413,226.30/x
  3. Step 3: Cross multiply
    138,294,478.78x = 190,843,609.35 × 76,413,226.30
  4. Step 4: Simplify right side
    138,294,478.78x = 14,582,975,909,170,344
  5. Step 5: Solve for x
    x = 14,582,975,909,170,344/138,294,478.78
  6. Step 6: Final answer
    x = 105,448,721.00

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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.