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Finding the Fourth Proportional to 163,622.80, 245,434.20 and 84,761.20

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Solution

The fourth proportional to 163,622.80, 245,434.20 and 84,761.20 is: 127,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,622.80 : 245,434.20 = 84,761.20 : x
  2. Step 2: Convert to fraction form
    163,622.80/245,434.20 = 84,761.20/x
  3. Step 3: Cross multiply
    163,622.80x = 245,434.20 × 84,761.20
  4. Step 4: Simplify right side
    163,622.80x = 20,803,297,313.04
  5. Step 5: Solve for x
    x = 20,803,297,313.04/163,622.80
  6. Step 6: Final answer
    x = 127,141.80

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1.5x scale

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.