Home / 142,864.20-213,946.38-100,640.52

Finding the Fourth Proportional to 142,864.20, 213,946.38 and 100,640.52

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Solution

The fourth proportional to 142,864.20, 213,946.38 and 100,640.52 is: 150,714.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,864.20 : 213,946.38 = 100,640.52 : x
  2. Step 2: Convert to fraction form
    142,864.20/213,946.38 = 100,640.52/x
  3. Step 3: Cross multiply
    142,864.20x = 213,946.38 × 100,640.52
  4. Step 4: Simplify right side
    142,864.20x = 21,531,674,935.32
  5. Step 5: Solve for x
    x = 21,531,674,935.32/142,864.20
  6. Step 6: Final answer
    x = 150,714.28

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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.