Home / 154,630.67-213,385.16-85,717.23

Finding the Fourth Proportional to 154,630.67, 213,385.16 and 85,717.23

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Solution

The fourth proportional to 154,630.67, 213,385.16 and 85,717.23 is: 118,286.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,630.67 : 213,385.16 = 85,717.23 : x
  2. Step 2: Convert to fraction form
    154,630.67/213,385.16 = 85,717.23/x
  3. Step 3: Cross multiply
    154,630.67x = 213,385.16 × 85,717.23
  4. Step 4: Simplify right side
    154,630.67x = 18,290,784,409.72
  5. Step 5: Solve for x
    x = 18,290,784,409.72/154,630.67
  6. Step 6: Final answer
    x = 118,286.92

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1.5x scale

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.