Home / 127,756.94-176,115.54-81,811.72

Finding the Fourth Proportional to 127,756.94, 176,115.54 and 81,811.72

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Solution

The fourth proportional to 127,756.94, 176,115.54 and 81,811.72 is: 112,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,756.94 : 176,115.54 = 81,811.72 : x
  2. Step 2: Convert to fraction form
    127,756.94/176,115.54 = 81,811.72/x
  3. Step 3: Cross multiply
    127,756.94x = 176,115.54 × 81,811.72
  4. Step 4: Simplify right side
    127,756.94x = 14,408,315,246.13
  5. Step 5: Solve for x
    x = 14,408,315,246.13/127,756.94
  6. Step 6: Final answer
    x = 112,779.12

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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.