Home / 126,159.48-189,025-76,134.46

Finding the Fourth Proportional to 126,159.48, 189,025 and 76,134.46

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Solution

The fourth proportional to 126,159.48, 189,025 and 76,134.46 is: 114,072.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,159.48 : 189,025 = 76,134.46 : x
  2. Step 2: Convert to fraction form
    126,159.48/189,025 = 76,134.46/x
  3. Step 3: Cross multiply
    126,159.48x = 189,025 × 76,134.46
  4. Step 4: Simplify right side
    126,159.48x = 14,391,316,301.50
  5. Step 5: Solve for x
    x = 14,391,316,301.50/126,159.48
  6. Step 6: Final answer
    x = 114,072.41

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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.