Home / 126,018,568.55-189,025,968.36-76,848,867.20

Finding the Fourth Proportional to 126,018,568.55, 189,025,968.36 and 76,848,867.20

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Solution

The fourth proportional to 126,018,568.55, 189,025,968.36 and 76,848,867.20 is: 115,272,151.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,018,568.55 : 189,025,968.36 = 76,848,867.20 : x
  2. Step 2: Convert to fraction form
    126,018,568.55/189,025,968.36 = 76,848,867.20/x
  3. Step 3: Cross multiply
    126,018,568.55x = 189,025,968.36 × 76,848,867.20
  4. Step 4: Simplify right side
    126,018,568.55x = 14,526,431,539,849,044
  5. Step 5: Solve for x
    x = 14,526,431,539,849,044/126,018,568.55
  6. Step 6: Final answer
    x = 115,272,151.61

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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.