Home / 121,310.42-181,982.64-42,406.70

Finding the Fourth Proportional to 121,310.42, 181,982.64 and 42,406.70

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Solution

The fourth proportional to 121,310.42, 181,982.64 and 42,406.70 is: 63,616.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,310.42 : 181,982.64 = 42,406.70 : x
  2. Step 2: Convert to fraction form
    121,310.42/181,982.64 = 42,406.70/x
  3. Step 3: Cross multiply
    121,310.42x = 181,982.64 × 42,406.70
  4. Step 4: Simplify right side
    121,310.42x = 7,717,283,219.69
  5. Step 5: Solve for x
    x = 7,717,283,219.69/121,310.42
  6. Step 6: Final answer
    x = 63,616.00

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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.