Home / 138,180.74-206,193.40-123,287.27

Finding the Fourth Proportional to 138,180.74, 206,193.40 and 123,287.27

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Solution

The fourth proportional to 138,180.74, 206,193.40 and 123,287.27 is: 183,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,180.74 : 206,193.40 = 123,287.27 : x
  2. Step 2: Convert to fraction form
    138,180.74/206,193.40 = 123,287.27/x
  3. Step 3: Cross multiply
    138,180.74x = 206,193.40 × 123,287.27
  4. Step 4: Simplify right side
    138,180.74x = 25,421,020,038.83
  5. Step 5: Solve for x
    x = 25,421,020,038.83/138,180.74
  6. Step 6: Final answer
    x = 183,969.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.