Home / 119,129.94-164,436.21-76,688.44

Finding the Fourth Proportional to 119,129.94, 164,436.21 and 76,688.44

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Solution

The fourth proportional to 119,129.94, 164,436.21 and 76,688.44 is: 105,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,129.94 : 164,436.21 = 76,688.44 : x
  2. Step 2: Convert to fraction form
    119,129.94/164,436.21 = 76,688.44/x
  3. Step 3: Cross multiply
    119,129.94x = 164,436.21 × 76,688.44
  4. Step 4: Simplify right side
    119,129.94x = 12,610,356,013.32
  5. Step 5: Solve for x
    x = 12,610,356,013.32/119,129.94
  6. Step 6: Final answer
    x = 105,853.79

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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.