Home / 142,357.30-213,426.60-80,027.80

Finding the Fourth Proportional to 142,357.30, 213,426.60 and 80,027.80

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Solution

The fourth proportional to 142,357.30, 213,426.60 and 80,027.80 is: 119,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,357.30 : 213,426.60 = 80,027.80 : x
  2. Step 2: Convert to fraction form
    142,357.30/213,426.60 = 80,027.80/x
  3. Step 3: Cross multiply
    142,357.30x = 213,426.60 × 80,027.80
  4. Step 4: Simplify right side
    142,357.30x = 17,080,061,259.48
  5. Step 5: Solve for x
    x = 17,080,061,259.48/142,357.30
  6. Step 6: Final answer
    x = 119,980.23

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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.