Home / 121,863,536.79-168,171,680.77-69,653,693.46

Finding the Fourth Proportional to 121,863,536.79, 168,171,680.77 and 69,653,693.46

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Solution

The fourth proportional to 121,863,536.79, 168,171,680.77 and 69,653,693.46 is: 96,122,096.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,863,536.79 : 168,171,680.77 = 69,653,693.46 : x
  2. Step 2: Convert to fraction form
    121,863,536.79/168,171,680.77 = 69,653,693.46/x
  3. Step 3: Cross multiply
    121,863,536.79x = 168,171,680.77 × 69,653,693.46
  4. Step 4: Simplify right side
    121,863,536.79x = 11,713,778,700,908,552
  5. Step 5: Solve for x
    x = 11,713,778,700,908,552/121,863,536.79
  6. Step 6: Final answer
    x = 96,122,096.97

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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.