Home / 454,586.20-681,955.80-138,969.40

Finding the Fourth Proportional to 454,586.20, 681,955.80 and 138,969.40

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Solution

The fourth proportional to 454,586.20, 681,955.80 and 138,969.40 is: 208,477.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,586.20 : 681,955.80 = 138,969.40 : x
  2. Step 2: Convert to fraction form
    454,586.20/681,955.80 = 138,969.40/x
  3. Step 3: Cross multiply
    454,586.20x = 681,955.80 × 138,969.40
  4. Step 4: Simplify right side
    454,586.20x = 94,770,988,352.52
  5. Step 5: Solve for x
    x = 94,770,988,352.52/454,586.20
  6. Step 6: Final answer
    x = 208,477.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.