Home / 123,875.70-186,639.21-112,042.65

Finding the Fourth Proportional to 123,875.70, 186,639.21 and 112,042.65

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Solution

The fourth proportional to 123,875.70, 186,639.21 and 112,042.65 is: 168,810.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,875.70 : 186,639.21 = 112,042.65 : x
  2. Step 2: Convert to fraction form
    123,875.70/186,639.21 = 112,042.65/x
  3. Step 3: Cross multiply
    123,875.70x = 186,639.21 × 112,042.65
  4. Step 4: Simplify right side
    123,875.70x = 20,911,552,382.20
  5. Step 5: Solve for x
    x = 20,911,552,382.20/123,875.70
  6. Step 6: Final answer
    x = 168,810.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.