Home / 128,770,251.20-193,155,376.80-42,521,969.60

Finding the Fourth Proportional to 128,770,251.20, 193,155,376.80 and 42,521,969.60

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Solution

The fourth proportional to 128,770,251.20, 193,155,376.80 and 42,521,969.60 is: 63,782,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,770,251.20 : 193,155,376.80 = 42,521,969.60 : x
  2. Step 2: Convert to fraction form
    128,770,251.20/193,155,376.80 = 42,521,969.60/x
  3. Step 3: Cross multiply
    128,770,251.20x = 193,155,376.80 × 42,521,969.60
  4. Step 4: Simplify right side
    128,770,251.20x = 8,213,347,060,366,146
  5. Step 5: Solve for x
    x = 8,213,347,060,366,146/128,770,251.20
  6. Step 6: Final answer
    x = 63,782,954.40

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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.