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Finding the Fourth Proportional to 130,487.88, 195,591.90 and 85,492.25

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Solution

The fourth proportional to 130,487.88, 195,591.90 and 85,492.25 is: 128,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,487.88 : 195,591.90 = 85,492.25 : x
  2. Step 2: Convert to fraction form
    130,487.88/195,591.90 = 85,492.25/x
  3. Step 3: Cross multiply
    130,487.88x = 195,591.90 × 85,492.25
  4. Step 4: Simplify right side
    130,487.88x = 16,721,590,634.82
  5. Step 5: Solve for x
    x = 16,721,590,634.82/130,487.88
  6. Step 6: Final answer
    x = 128,146.70

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1.5x scale

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.