Home / 142,788.80-213,994.20-76,085.30

Finding the Fourth Proportional to 142,788.80, 213,994.20 and 76,085.30

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Solution

The fourth proportional to 142,788.80, 213,994.20 and 76,085.30 is: 114,027.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,788.80 : 213,994.20 = 76,085.30 : x
  2. Step 2: Convert to fraction form
    142,788.80/213,994.20 = 76,085.30/x
  3. Step 3: Cross multiply
    142,788.80x = 213,994.20 × 76,085.30
  4. Step 4: Simplify right side
    142,788.80x = 16,281,812,905.26
  5. Step 5: Solve for x
    x = 16,281,812,905.26/142,788.80
  6. Step 6: Final answer
    x = 114,027.24

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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.