Home / 137,109,970.24-189,211,761.03-78,373,907.80

Finding the Fourth Proportional to 137,109,970.24, 189,211,761.03 and 78,373,907.80

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Solution

The fourth proportional to 137,109,970.24, 189,211,761.03 and 78,373,907.80 is: 108,155,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,109,970.24 : 189,211,761.03 = 78,373,907.80 : x
  2. Step 2: Convert to fraction form
    137,109,970.24/189,211,761.03 = 78,373,907.80/x
  3. Step 3: Cross multiply
    137,109,970.24x = 189,211,761.03 × 78,373,907.80
  4. Step 4: Simplify right side
    137,109,970.24x = 14,829,265,113,461,726
  5. Step 5: Solve for x
    x = 14,829,265,113,461,726/137,109,970.24
  6. Step 6: Final answer
    x = 108,155,993.96

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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.