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Finding the Fourth Proportional to 210,133.44, 289,940.76 and 122,901.84

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Solution

The fourth proportional to 210,133.44, 289,940.76 and 122,901.84 is: 169,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,133.44 : 289,940.76 = 122,901.84 : x
  2. Step 2: Convert to fraction form
    210,133.44/289,940.76 = 122,901.84/x
  3. Step 3: Cross multiply
    210,133.44x = 289,940.76 × 122,901.84
  4. Step 4: Simplify right side
    210,133.44x = 35,634,252,895.00
  5. Step 5: Solve for x
    x = 35,634,252,895.00/210,133.44
  6. Step 6: Final answer
    x = 169,579.16

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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.