Home / 138,261,385.54-190,804,562.04-76,385,709.91

Finding the Fourth Proportional to 138,261,385.54, 190,804,562.04 and 76,385,709.91

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Solution

The fourth proportional to 138,261,385.54, 190,804,562.04 and 76,385,709.91 is: 105,414,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,261,385.54 : 190,804,562.04 = 76,385,709.91 : x
  2. Step 2: Convert to fraction form
    138,261,385.54/190,804,562.04 = 76,385,709.91/x
  3. Step 3: Cross multiply
    138,261,385.54x = 190,804,562.04 × 76,385,709.91
  4. Step 4: Simplify right side
    138,261,385.54x = 14,574,741,925,492,036
  5. Step 5: Solve for x
    x = 14,574,741,925,492,036/138,261,385.54
  6. Step 6: Final answer
    x = 105,414,406.69

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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.