Home / 154,820.20-213,668.58-87,745

Finding the Fourth Proportional to 154,820.20, 213,668.58 and 87,745

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Solution

The fourth proportional to 154,820.20, 213,668.58 and 87,745 is: 121,097.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,820.20 : 213,668.58 = 87,745 : x
  2. Step 2: Convert to fraction form
    154,820.20/213,668.58 = 87,745/x
  3. Step 3: Cross multiply
    154,820.20x = 213,668.58 × 87,745
  4. Step 4: Simplify right side
    154,820.20x = 18,748,349,552.10
  5. Step 5: Solve for x
    x = 18,748,349,552.10/154,820.20
  6. Step 6: Final answer
    x = 121,097.57

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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.