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Finding the Fourth Proportional to 130,475.34, 195,380.71 and 85,967.19

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Solution

The fourth proportional to 130,475.34, 195,380.71 and 85,967.19 is: 128,731.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,475.34 : 195,380.71 = 85,967.19 : x
  2. Step 2: Convert to fraction form
    130,475.34/195,380.71 = 85,967.19/x
  3. Step 3: Cross multiply
    130,475.34x = 195,380.71 × 85,967.19
  4. Step 4: Simplify right side
    130,475.34x = 16,796,330,403.99
  5. Step 5: Solve for x
    x = 16,796,330,403.99/130,475.34
  6. Step 6: Final answer
    x = 128,731.84

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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.