Home / 454,072.86-681,107.40-138,528.72

Finding the Fourth Proportional to 454,072.86, 681,107.40 and 138,528.72

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Solution

The fourth proportional to 454,072.86, 681,107.40 and 138,528.72 is: 207,792.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,072.86 : 681,107.40 = 138,528.72 : x
  2. Step 2: Convert to fraction form
    454,072.86/681,107.40 = 138,528.72/x
  3. Step 3: Cross multiply
    454,072.86x = 681,107.40 × 138,528.72
  4. Step 4: Simplify right side
    454,072.86x = 94,352,936,304.53
  5. Step 5: Solve for x
    x = 94,352,936,304.53/454,072.86
  6. Step 6: Final answer
    x = 207,792.50

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1.5x scale

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.