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Finding the Fourth Proportional to 168,291,293.60, 252,362,290.80 and 77,368,080.80

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Solution

The fourth proportional to 168,291,293.60, 252,362,290.80 and 77,368,080.80 is: 116,017,802.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,291,293.60 : 252,362,290.80 = 77,368,080.80 : x
  2. Step 2: Convert to fraction form
    168,291,293.60/252,362,290.80 = 77,368,080.80/x
  3. Step 3: Cross multiply
    168,291,293.60x = 252,362,290.80 × 77,368,080.80
  4. Step 4: Simplify right side
    168,291,293.60x = 19,524,786,105,487,496
  5. Step 5: Solve for x
    x = 19,524,786,105,487,496/168,291,293.60
  6. Step 6: Final answer
    x = 116,017,802.75

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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.