Home / 142,360.30-213,431.10-80,030.80

Finding the Fourth Proportional to 142,360.30, 213,431.10 and 80,030.80

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Solution

The fourth proportional to 142,360.30, 213,431.10 and 80,030.80 is: 119,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,360.30 : 213,431.10 = 80,030.80 : x
  2. Step 2: Convert to fraction form
    142,360.30/213,431.10 = 80,030.80/x
  3. Step 3: Cross multiply
    142,360.30x = 213,431.10 × 80,030.80
  4. Step 4: Simplify right side
    142,360.30x = 17,081,061,677.88
  5. Step 5: Solve for x
    x = 17,081,061,677.88/142,360.30
  6. Step 6: Final answer
    x = 119,984.73

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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.