Home / 145,269.20-200,495.32-121,031.78

Finding the Fourth Proportional to 145,269.20, 200,495.32 and 121,031.78

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Solution

The fourth proportional to 145,269.20, 200,495.32 and 121,031.78 is: 167,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,269.20 : 200,495.32 = 121,031.78 : x
  2. Step 2: Convert to fraction form
    145,269.20/200,495.32 = 121,031.78/x
  3. Step 3: Cross multiply
    145,269.20x = 200,495.32 × 121,031.78
  4. Step 4: Simplify right side
    145,269.20x = 24,266,305,461.27
  5. Step 5: Solve for x
    x = 24,266,305,461.27/145,269.20
  6. Step 6: Final answer
    x = 167,043.71

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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.