Home / 126,018,569.55-189,025,969.86-76,848,868.20

Finding the Fourth Proportional to 126,018,569.55, 189,025,969.86 and 76,848,868.20

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Solution

The fourth proportional to 126,018,569.55, 189,025,969.86 and 76,848,868.20 is: 115,272,153.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,018,569.55 : 189,025,969.86 = 76,848,868.20 : x
  2. Step 2: Convert to fraction form
    126,018,569.55/189,025,969.86 = 76,848,868.20/x
  3. Step 3: Cross multiply
    126,018,569.55x = 189,025,969.86 × 76,848,868.20
  4. Step 4: Simplify right side
    126,018,569.55x = 14,526,431,844,148,314
  5. Step 5: Solve for x
    x = 14,526,431,844,148,314/126,018,569.55
  6. Step 6: Final answer
    x = 115,272,153.11

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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.