Home / 129,582.10-178,826.25-72,227.30

Finding the Fourth Proportional to 129,582.10, 178,826.25 and 72,227.30

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Solution

The fourth proportional to 129,582.10, 178,826.25 and 72,227.30 is: 99,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,582.10 : 178,826.25 = 72,227.30 : x
  2. Step 2: Convert to fraction form
    129,582.10/178,826.25 = 72,227.30/x
  3. Step 3: Cross multiply
    129,582.10x = 178,826.25 × 72,227.30
  4. Step 4: Simplify right side
    129,582.10x = 12,916,137,206.63
  5. Step 5: Solve for x
    x = 12,916,137,206.63/129,582.10
  6. Step 6: Final answer
    x = 99,675.32

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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.