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Finding the Fourth Proportional to 181,490.68, 250,461.48 and 100,921.60

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Solution

The fourth proportional to 181,490.68, 250,461.48 and 100,921.60 is: 139,274.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,490.68 : 250,461.48 = 100,921.60 : x
  2. Step 2: Convert to fraction form
    181,490.68/250,461.48 = 100,921.60/x
  3. Step 3: Cross multiply
    181,490.68x = 250,461.48 × 100,921.60
  4. Step 4: Simplify right side
    181,490.68x = 25,276,973,299.97
  5. Step 5: Solve for x
    x = 25,276,973,299.97/181,490.68
  6. Step 6: Final answer
    x = 139,274.22

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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.