Home / 209,482,985.57-289,064,772.27-129,002,183.24

Finding the Fourth Proportional to 209,482,985.57, 289,064,772.27 and 129,002,183.24

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Solution

The fourth proportional to 209,482,985.57, 289,064,772.27 and 129,002,183.24 is: 178,009,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,482,985.57 : 289,064,772.27 = 129,002,183.24 : x
  2. Step 2: Convert to fraction form
    209,482,985.57/289,064,772.27 = 129,002,183.24/x
  3. Step 3: Cross multiply
    209,482,985.57x = 289,064,772.27 × 129,002,183.24
  4. Step 4: Simplify right side
    209,482,985.57x = 37,289,986,719,158,088
  5. Step 5: Solve for x
    x = 37,289,986,719,158,088/209,482,985.57
  6. Step 6: Final answer
    x = 178,009,620.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.