Home / 142,508.30-213,628.80-53,821.40

Finding the Fourth Proportional to 142,508.30, 213,628.80 and 53,821.40

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Solution

The fourth proportional to 142,508.30, 213,628.80 and 53,821.40 is: 80,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,508.30 : 213,628.80 = 53,821.40 : x
  2. Step 2: Convert to fraction form
    142,508.30/213,628.80 = 53,821.40/x
  3. Step 3: Cross multiply
    142,508.30x = 213,628.80 × 53,821.40
  4. Step 4: Simplify right side
    142,508.30x = 11,497,801,096.32
  5. Step 5: Solve for x
    x = 11,497,801,096.32/142,508.30
  6. Step 6: Final answer
    x = 80,681.62

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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.