Home / 128,670,014.40-193,033,015.20-42,393,739.20

Finding the Fourth Proportional to 128,670,014.40, 193,033,015.20 and 42,393,739.20

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Solution

The fourth proportional to 128,670,014.40, 193,033,015.20 and 42,393,739.20 is: 63,599,832.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,670,014.40 : 193,033,015.20 = 42,393,739.20 : x
  2. Step 2: Convert to fraction form
    128,670,014.40/193,033,015.20 = 42,393,739.20/x
  3. Step 3: Cross multiply
    128,670,014.40x = 193,033,015.20 × 42,393,739.20
  4. Step 4: Simplify right side
    128,670,014.40x = 8,183,391,303,378,436
  5. Step 5: Solve for x
    x = 8,183,391,303,378,436/128,670,014.40
  6. Step 6: Final answer
    x = 63,599,832.03

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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.