Home / 129,336,921.80-194,005,382.70-121,684,171.40

Finding the Fourth Proportional to 129,336,921.80, 194,005,382.70 and 121,684,171.40

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Solution

The fourth proportional to 129,336,921.80, 194,005,382.70 and 121,684,171.40 is: 182,526,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,336,921.80 : 194,005,382.70 = 121,684,171.40 : x
  2. Step 2: Convert to fraction form
    129,336,921.80/194,005,382.70 = 121,684,171.40/x
  3. Step 3: Cross multiply
    129,336,921.80x = 194,005,382.70 × 121,684,171.40
  4. Step 4: Simplify right side
    129,336,921.80x = 23,607,384,240,989,396
  5. Step 5: Solve for x
    x = 23,607,384,240,989,396/129,336,921.80
  6. Step 6: Final answer
    x = 182,526,257.10

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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.