Home / 142,776.30-213,975.45-76,072.80

Finding the Fourth Proportional to 142,776.30, 213,975.45 and 76,072.80

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Solution

The fourth proportional to 142,776.30, 213,975.45 and 76,072.80 is: 114,008.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,776.30 : 213,975.45 = 76,072.80 : x
  2. Step 2: Convert to fraction form
    142,776.30/213,975.45 = 76,072.80/x
  3. Step 3: Cross multiply
    142,776.30x = 213,975.45 × 76,072.80
  4. Step 4: Simplify right side
    142,776.30x = 16,277,711,612.76
  5. Step 5: Solve for x
    x = 16,277,711,612.76/142,776.30
  6. Step 6: Final answer
    x = 114,008.50

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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.