Home / 127,731.49-176,435.90-103,622.07

Finding the Fourth Proportional to 127,731.49, 176,435.90 and 103,622.07

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Solution

The fourth proportional to 127,731.49, 176,435.90 and 103,622.07 is: 143,133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,731.49 : 176,435.90 = 103,622.07 : x
  2. Step 2: Convert to fraction form
    127,731.49/176,435.90 = 103,622.07/x
  3. Step 3: Cross multiply
    127,731.49x = 176,435.90 × 103,622.07
  4. Step 4: Simplify right side
    127,731.49x = 18,282,653,180.31
  5. Step 5: Solve for x
    x = 18,282,653,180.31/127,731.49
  6. Step 6: Final answer
    x = 143,133.48

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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.