Home / 168,108,002.40-252,078,022.80-77,128,802.40

Finding the Fourth Proportional to 168,108,002.40, 252,078,022.80 and 77,128,802.40

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Solution

The fourth proportional to 168,108,002.40, 252,078,022.80 and 77,128,802.40 is: 115,654,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,108,002.40 : 252,078,022.80 = 77,128,802.40 : x
  2. Step 2: Convert to fraction form
    168,108,002.40/252,078,022.80 = 77,128,802.40/x
  3. Step 3: Cross multiply
    168,108,002.40x = 252,078,022.80 × 77,128,802.40
  4. Step 4: Simplify right side
    168,108,002.40x = 19,442,476,009,923,896
  5. Step 5: Solve for x
    x = 19,442,476,009,923,896/168,108,002.40
  6. Step 6: Final answer
    x = 115,654,672.78

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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.