Home / 142,549.20-213,871.31-47,788.76

Finding the Fourth Proportional to 142,549.20, 213,871.31 and 47,788.76

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Solution

The fourth proportional to 142,549.20, 213,871.31 and 47,788.76 is: 71,699.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,549.20 : 213,871.31 = 47,788.76 : x
  2. Step 2: Convert to fraction form
    142,549.20/213,871.31 = 47,788.76/x
  3. Step 3: Cross multiply
    142,549.20x = 213,871.31 × 47,788.76
  4. Step 4: Simplify right side
    142,549.20x = 10,220,643,396.18
  5. Step 5: Solve for x
    x = 10,220,643,396.18/142,549.20
  6. Step 6: Final answer
    x = 71,699.06

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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.