Home / 121,863,536.78-168,171,680.76-69,653,693.47

Finding the Fourth Proportional to 121,863,536.78, 168,171,680.76 and 69,653,693.47

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Solution

The fourth proportional to 121,863,536.78, 168,171,680.76 and 69,653,693.47 is: 96,122,096.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,863,536.78 : 168,171,680.76 = 69,653,693.47 : x
  2. Step 2: Convert to fraction form
    121,863,536.78/168,171,680.76 = 69,653,693.47/x
  3. Step 3: Cross multiply
    121,863,536.78x = 168,171,680.76 × 69,653,693.47
  4. Step 4: Simplify right side
    121,863,536.78x = 11,713,778,701,739,904
  5. Step 5: Solve for x
    x = 11,713,778,701,739,904/121,863,536.78
  6. Step 6: Final answer
    x = 96,122,096.99

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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.