Home / 142,426.80-213,506.55-53,739.90

Finding the Fourth Proportional to 142,426.80, 213,506.55 and 53,739.90

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Solution

The fourth proportional to 142,426.80, 213,506.55 and 53,739.90 is: 80,559.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,426.80 : 213,506.55 = 53,739.90 : x
  2. Step 2: Convert to fraction form
    142,426.80/213,506.55 = 53,739.90/x
  3. Step 3: Cross multiply
    142,426.80x = 213,506.55 × 53,739.90
  4. Step 4: Simplify right side
    142,426.80x = 11,473,820,646.35
  5. Step 5: Solve for x
    x = 11,473,820,646.35/142,426.80
  6. Step 6: Final answer
    x = 80,559.42

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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.