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Finding the Fourth Proportional to 215,154, 296,912.52 and 125,730

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Solution

The fourth proportional to 215,154, 296,912.52 and 125,730 is: 173,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,154 : 296,912.52 = 125,730 : x
  2. Step 2: Convert to fraction form
    215,154/296,912.52 = 125,730/x
  3. Step 3: Cross multiply
    215,154x = 296,912.52 × 125,730
  4. Step 4: Simplify right side
    215,154x = 37,330,811,139.60
  5. Step 5: Solve for x
    x = 37,330,811,139.60/215,154
  6. Step 6: Final answer
    x = 173,507.40

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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.