Home / 127,900.66-176,516.07-81,365.80

Finding the Fourth Proportional to 127,900.66, 176,516.07 and 81,365.80

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Solution

The fourth proportional to 127,900.66, 176,516.07 and 81,365.80 is: 112,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,900.66 : 176,516.07 = 81,365.80 : x
  2. Step 2: Convert to fraction form
    127,900.66/176,516.07 = 81,365.80/x
  3. Step 3: Cross multiply
    127,900.66x = 176,516.07 × 81,365.80
  4. Step 4: Simplify right side
    127,900.66x = 14,362,371,248.41
  5. Step 5: Solve for x
    x = 14,362,371,248.41/127,900.66
  6. Step 6: Final answer
    x = 112,293.18

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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.