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Finding the Fourth Proportional to 169,978,012.80, 254,967,019.20 and 108,756,009.60

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Solution

The fourth proportional to 169,978,012.80, 254,967,019.20 and 108,756,009.60 is: 163,134,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,978,012.80 : 254,967,019.20 = 108,756,009.60 : x
  2. Step 2: Convert to fraction form
    169,978,012.80/254,967,019.20 = 108,756,009.60/x
  3. Step 3: Cross multiply
    169,978,012.80x = 254,967,019.20 × 108,756,009.60
  4. Step 4: Simplify right side
    169,978,012.80x = 27,729,195,587,798,580
  5. Step 5: Solve for x
    x = 27,729,195,587,798,580/169,978,012.80
  6. Step 6: Final answer
    x = 163,134,014.40

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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.