Home / 200,076,410.70-300,039,966.45-78,882,785.10

Finding the Fourth Proportional to 200,076,410.70, 300,039,966.45 and 78,882,785.10

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Solution

The fourth proportional to 200,076,410.70, 300,039,966.45 and 78,882,785.10 is: 118,294,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,076,410.70 : 300,039,966.45 = 78,882,785.10 : x
  2. Step 2: Convert to fraction form
    200,076,410.70/300,039,966.45 = 78,882,785.10/x
  3. Step 3: Cross multiply
    200,076,410.70x = 300,039,966.45 × 78,882,785.10
  4. Step 4: Simplify right side
    200,076,410.70x = 23,667,988,194,886,556
  5. Step 5: Solve for x
    x = 23,667,988,194,886,556/200,076,410.70
  6. Step 6: Final answer
    x = 118,294,746.05

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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.