Home / 166,320.90-249,517.80-82,121.40

Finding the Fourth Proportional to 166,320.90, 249,517.80 and 82,121.40

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Solution

The fourth proportional to 166,320.90, 249,517.80 and 82,121.40 is: 123,200.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,320.90 : 249,517.80 = 82,121.40 : x
  2. Step 2: Convert to fraction form
    166,320.90/249,517.80 = 82,121.40/x
  3. Step 3: Cross multiply
    166,320.90x = 249,517.80 × 82,121.40
  4. Step 4: Simplify right side
    166,320.90x = 20,490,751,060.92
  5. Step 5: Solve for x
    x = 20,490,751,060.92/166,320.90
  6. Step 6: Final answer
    x = 123,200.10

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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.