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Finding the Fourth Proportional to 216,705, 325,122.36 and 92,055.72

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Solution

The fourth proportional to 216,705, 325,122.36 and 92,055.72 is: 138,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,705 : 325,122.36 = 92,055.72 : x
  2. Step 2: Convert to fraction form
    216,705/325,122.36 = 92,055.72/x
  3. Step 3: Cross multiply
    216,705x = 325,122.36 × 92,055.72
  4. Step 4: Simplify right side
    216,705x = 29,929,372,937.90
  5. Step 5: Solve for x
    x = 29,929,372,937.90/216,705
  6. Step 6: Final answer
    x = 138,111.13

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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.