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Finding the Fourth Proportional to 199,389,867.80, 299,084,801.70 and 108,690,603.80

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Solution

The fourth proportional to 199,389,867.80, 299,084,801.70 and 108,690,603.80 is: 163,035,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,389,867.80 : 299,084,801.70 = 108,690,603.80 : x
  2. Step 2: Convert to fraction form
    199,389,867.80/299,084,801.70 = 108,690,603.80/x
  3. Step 3: Cross multiply
    199,389,867.80x = 299,084,801.70 × 108,690,603.80
  4. Step 4: Simplify right side
    199,389,867.80x = 32,507,707,684,176,264
  5. Step 5: Solve for x
    x = 32,507,707,684,176,264/199,389,867.80
  6. Step 6: Final answer
    x = 163,035,905.70

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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.