Home / 147,048.80-220,427.40-72,107.60

Finding the Fourth Proportional to 147,048.80, 220,427.40 and 72,107.60

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Solution

The fourth proportional to 147,048.80, 220,427.40 and 72,107.60 is: 108,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,048.80 : 220,427.40 = 72,107.60 : x
  2. Step 2: Convert to fraction form
    147,048.80/220,427.40 = 72,107.60/x
  3. Step 3: Cross multiply
    147,048.80x = 220,427.40 × 72,107.60
  4. Step 4: Simplify right side
    147,048.80x = 15,894,490,788.24
  5. Step 5: Solve for x
    x = 15,894,490,788.24/147,048.80
  6. Step 6: Final answer
    x = 108,089.90

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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.