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Finding the Fourth Proportional to 130,464.40, 195,696.60 and 85,363.60

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Solution

The fourth proportional to 130,464.40, 195,696.60 and 85,363.60 is: 128,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,464.40 : 195,696.60 = 85,363.60 : x
  2. Step 2: Convert to fraction form
    130,464.40/195,696.60 = 85,363.60/x
  3. Step 3: Cross multiply
    130,464.40x = 195,696.60 × 85,363.60
  4. Step 4: Simplify right side
    130,464.40x = 16,705,366,283.76
  5. Step 5: Solve for x
    x = 16,705,366,283.76/130,464.40
  6. Step 6: Final answer
    x = 128,045.40

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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.