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Finding the Fourth Proportional to 100,957.80, 151,435.35 and 30,837.45

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Solution

The fourth proportional to 100,957.80, 151,435.35 and 30,837.45 is: 46,255.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,957.80 : 151,435.35 = 30,837.45 : x
  2. Step 2: Convert to fraction form
    100,957.80/151,435.35 = 30,837.45/x
  3. Step 3: Cross multiply
    100,957.80x = 151,435.35 × 30,837.45
  4. Step 4: Simplify right side
    100,957.80x = 4,669,880,033.86
  5. Step 5: Solve for x
    x = 4,669,880,033.86/100,957.80
  6. Step 6: Final answer
    x = 46,255.76

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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.