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Finding the Fourth Proportional to 130,015.10, 194,965.05 and 59,915.90

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Solution

The fourth proportional to 130,015.10, 194,965.05 and 59,915.90 is: 89,847.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,015.10 : 194,965.05 = 59,915.90 : x
  2. Step 2: Convert to fraction form
    130,015.10/194,965.05 = 59,915.90/x
  3. Step 3: Cross multiply
    130,015.10x = 194,965.05 × 59,915.90
  4. Step 4: Simplify right side
    130,015.10x = 11,681,506,439.30
  5. Step 5: Solve for x
    x = 11,681,506,439.30/130,015.10
  6. Step 6: Final answer
    x = 89,847.31

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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.