Home / 129,927,836.86-194,903,735.37-42,489,807.40

Finding the Fourth Proportional to 129,927,836.86, 194,903,735.37 and 42,489,807.40

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Solution

The fourth proportional to 129,927,836.86, 194,903,735.37 and 42,489,807.40 is: 63,738,628.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,927,836.86 : 194,903,735.37 = 42,489,807.40 : x
  2. Step 2: Convert to fraction form
    129,927,836.86/194,903,735.37 = 42,489,807.40/x
  3. Step 3: Cross multiply
    129,927,836.86x = 194,903,735.37 × 42,489,807.40
  4. Step 4: Simplify right side
    129,927,836.86x = 8,281,422,177,411,868
  5. Step 5: Solve for x
    x = 8,281,422,177,411,868/129,927,836.86
  6. Step 6: Final answer
    x = 63,738,628.90

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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.