Home / 142,017.12-213,135.68-53,351.20

Finding the Fourth Proportional to 142,017.12, 213,135.68 and 53,351.20

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Solution

The fourth proportional to 142,017.12, 213,135.68 and 53,351.20 is: 80,068.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,017.12 : 213,135.68 = 53,351.20 : x
  2. Step 2: Convert to fraction form
    142,017.12/213,135.68 = 53,351.20/x
  3. Step 3: Cross multiply
    142,017.12x = 213,135.68 × 53,351.20
  4. Step 4: Simplify right side
    142,017.12x = 11,371,044,290.82
  5. Step 5: Solve for x
    x = 11,371,044,290.82/142,017.12
  6. Step 6: Final answer
    x = 80,068.12

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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.