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Finding the Fourth Proportional to 144,777.32, 199,890.36 and 90,412.56

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Solution

The fourth proportional to 144,777.32, 199,890.36 and 90,412.56 is: 124,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,777.32 : 199,890.36 = 90,412.56 : x
  2. Step 2: Convert to fraction form
    144,777.32/199,890.36 = 90,412.56/x
  3. Step 3: Cross multiply
    144,777.32x = 199,890.36 × 90,412.56
  4. Step 4: Simplify right side
    144,777.32x = 18,072,599,166.92
  5. Step 5: Solve for x
    x = 18,072,599,166.92/144,777.32
  6. Step 6: Final answer
    x = 124,830.32

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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.