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Finding the Fourth Proportional to 130,503.68, 195,729.60 and 63,915.20

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Solution

The fourth proportional to 130,503.68, 195,729.60 and 63,915.20 is: 95,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,503.68 : 195,729.60 = 63,915.20 : x
  2. Step 2: Convert to fraction form
    130,503.68/195,729.60 = 63,915.20/x
  3. Step 3: Cross multiply
    130,503.68x = 195,729.60 × 63,915.20
  4. Step 4: Simplify right side
    130,503.68x = 12,510,096,529.92
  5. Step 5: Solve for x
    x = 12,510,096,529.92/130,503.68
  6. Step 6: Final answer
    x = 95,860.11

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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.