Home / 137,109,969.68-189,211,760.26-78,373,907.24

Finding the Fourth Proportional to 137,109,969.68, 189,211,760.26 and 78,373,907.24

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Solution

The fourth proportional to 137,109,969.68, 189,211,760.26 and 78,373,907.24 is: 108,155,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,109,969.68 : 189,211,760.26 = 78,373,907.24 : x
  2. Step 2: Convert to fraction form
    137,109,969.68/189,211,760.26 = 78,373,907.24/x
  3. Step 3: Cross multiply
    137,109,969.68x = 189,211,760.26 × 78,373,907.24
  4. Step 4: Simplify right side
    137,109,969.68x = 14,829,264,946,192,364
  5. Step 5: Solve for x
    x = 14,829,264,946,192,364/137,109,969.68
  6. Step 6: Final answer
    x = 108,155,993.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.