Home / 142,209.10-213,274.77-53,455.78

Finding the Fourth Proportional to 142,209.10, 213,274.77 and 53,455.78

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Solution

The fourth proportional to 142,209.10, 213,274.77 and 53,455.78 is: 80,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,209.10 : 213,274.77 = 53,455.78 : x
  2. Step 2: Convert to fraction form
    142,209.10/213,274.77 = 53,455.78/x
  3. Step 3: Cross multiply
    142,209.10x = 213,274.77 × 53,455.78
  4. Step 4: Simplify right side
    142,209.10x = 11,400,769,184.67
  5. Step 5: Solve for x
    x = 11,400,769,184.67/142,209.10
  6. Step 6: Final answer
    x = 80,169.06

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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.