Home / 216,758.56-299,141.04-121,281.76

Finding the Fourth Proportional to 216,758.56, 299,141.04 and 121,281.76

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Solution

The fourth proportional to 216,758.56, 299,141.04 and 121,281.76 is: 167,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,758.56 : 299,141.04 = 121,281.76 : x
  2. Step 2: Convert to fraction form
    216,758.56/299,141.04 = 121,281.76/x
  3. Step 3: Cross multiply
    216,758.56x = 299,141.04 × 121,281.76
  4. Step 4: Simplify right side
    216,758.56x = 36,280,351,819.43
  5. Step 5: Solve for x
    x = 36,280,351,819.43/216,758.56
  6. Step 6: Final answer
    x = 167,376.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.