Home / 134,849.64-186,087.06-78,256.56

Finding the Fourth Proportional to 134,849.64, 186,087.06 and 78,256.56

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Solution

The fourth proportional to 134,849.64, 186,087.06 and 78,256.56 is: 107,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,849.64 : 186,087.06 = 78,256.56 : x
  2. Step 2: Convert to fraction form
    134,849.64/186,087.06 = 78,256.56/x
  3. Step 3: Cross multiply
    134,849.64x = 186,087.06 × 78,256.56
  4. Step 4: Simplify right side
    134,849.64x = 14,562,533,176.11
  5. Step 5: Solve for x
    x = 14,562,533,176.11/134,849.64
  6. Step 6: Final answer
    x = 107,990.89

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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.