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Finding the Fourth Proportional to 100,323.70, 149,601.32 and 99,424.33

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Solution

The fourth proportional to 100,323.70, 149,601.32 and 99,424.33 is: 148,260.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,323.70 : 149,601.32 = 99,424.33 : x
  2. Step 2: Convert to fraction form
    100,323.70/149,601.32 = 99,424.33/x
  3. Step 3: Cross multiply
    100,323.70x = 149,601.32 × 99,424.33
  4. Step 4: Simplify right side
    100,323.70x = 14,874,011,008.12
  5. Step 5: Solve for x
    x = 14,874,011,008.12/100,323.70
  6. Step 6: Final answer
    x = 148,260.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.