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Finding the Fourth Proportional to 207,687.61, 286,608.54 and 112,194.01

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Solution

The fourth proportional to 207,687.61, 286,608.54 and 112,194.01 is: 154,827.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,687.61 : 286,608.54 = 112,194.01 : x
  2. Step 2: Convert to fraction form
    207,687.61/286,608.54 = 112,194.01/x
  3. Step 3: Cross multiply
    207,687.61x = 286,608.54 × 112,194.01
  4. Step 4: Simplify right side
    207,687.61x = 32,155,761,402.85
  5. Step 5: Solve for x
    x = 32,155,761,402.85/207,687.61
  6. Step 6: Final answer
    x = 154,827.54

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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.