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Finding the Fourth Proportional to 207,511.72, 286,367.34 and 118,087.72

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Solution

The fourth proportional to 207,511.72, 286,367.34 and 118,087.72 is: 162,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,511.72 : 286,367.34 = 118,087.72 : x
  2. Step 2: Convert to fraction form
    207,511.72/286,367.34 = 118,087.72/x
  3. Step 3: Cross multiply
    207,511.72x = 286,367.34 × 118,087.72
  4. Step 4: Simplify right side
    207,511.72x = 33,816,466,263.06
  5. Step 5: Solve for x
    x = 33,816,466,263.06/207,511.72
  6. Step 6: Final answer
    x = 162,961.72

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1.5x scale

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.