Home / 142,218.80-213,328.18-42,376.40

Finding the Fourth Proportional to 142,218.80, 213,328.18 and 42,376.40

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Solution

The fourth proportional to 142,218.80, 213,328.18 and 42,376.40 is: 63,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,218.80 : 213,328.18 = 42,376.40 : x
  2. Step 2: Convert to fraction form
    142,218.80/213,328.18 = 42,376.40/x
  3. Step 3: Cross multiply
    142,218.80x = 213,328.18 × 42,376.40
  4. Step 4: Simplify right side
    142,218.80x = 9,040,080,286.95
  5. Step 5: Solve for x
    x = 9,040,080,286.95/142,218.80
  6. Step 6: Final answer
    x = 63,564.59

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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.