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Finding the Fourth Proportional to 120,965,751.60, 181,448,627.40 and 86,953,527.60

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Solution

The fourth proportional to 120,965,751.60, 181,448,627.40 and 86,953,527.60 is: 130,430,291.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,965,751.60 : 181,448,627.40 = 86,953,527.60 : x
  2. Step 2: Convert to fraction form
    120,965,751.60/181,448,627.40 = 86,953,527.60/x
  3. Step 3: Cross multiply
    120,965,751.60x = 181,448,627.40 × 86,953,527.60
  4. Step 4: Simplify right side
    120,965,751.60x = 15,777,598,230,608,016
  5. Step 5: Solve for x
    x = 15,777,598,230,608,016/120,965,751.60
  6. Step 6: Final answer
    x = 130,430,291.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.