Home / 130,690.28-195,946.71-66,490.64

Finding the Fourth Proportional to 130,690.28, 195,946.71 and 66,490.64

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Solution

The fourth proportional to 130,690.28, 195,946.71 and 66,490.64 is: 99,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,690.28 : 195,946.71 = 66,490.64 : x
  2. Step 2: Convert to fraction form
    130,690.28/195,946.71 = 66,490.64/x
  3. Step 3: Cross multiply
    130,690.28x = 195,946.71 × 66,490.64
  4. Step 4: Simplify right side
    130,690.28x = 13,028,622,153.79
  5. Step 5: Solve for x
    x = 13,028,622,153.79/130,690.28
  6. Step 6: Final answer
    x = 99,690.83

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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.