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Finding the Fourth Proportional to 100,855.70, 151,267.35 and 30,718.70

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Solution

The fourth proportional to 100,855.70, 151,267.35 and 30,718.70 is: 46,073.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,855.70 : 151,267.35 = 30,718.70 : x
  2. Step 2: Convert to fraction form
    100,855.70/151,267.35 = 30,718.70/x
  3. Step 3: Cross multiply
    100,855.70x = 151,267.35 × 30,718.70
  4. Step 4: Simplify right side
    100,855.70x = 4,646,736,344.45
  5. Step 5: Solve for x
    x = 4,646,736,344.45/100,855.70
  6. Step 6: Final answer
    x = 46,073.12

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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.