Home / 272,448,009.20-408,672,013.80-129,120,777.20

Finding the Fourth Proportional to 272,448,009.20, 408,672,013.80 and 129,120,777.20

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Solution

The fourth proportional to 272,448,009.20, 408,672,013.80 and 129,120,777.20 is: 193,681,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,448,009.20 : 408,672,013.80 = 129,120,777.20 : x
  2. Step 2: Convert to fraction form
    272,448,009.20/408,672,013.80 = 129,120,777.20/x
  3. Step 3: Cross multiply
    272,448,009.20x = 408,672,013.80 × 129,120,777.20
  4. Step 4: Simplify right side
    272,448,009.20x = 52,768,048,041,745,128
  5. Step 5: Solve for x
    x = 52,768,048,041,745,128/272,448,009.20
  6. Step 6: Final answer
    x = 193,681,165.80

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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.