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Finding the Fourth Proportional to 141,785.64, 195,606.90 and 90,784.80

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Solution

The fourth proportional to 141,785.64, 195,606.90 and 90,784.80 is: 125,246.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,785.64 : 195,606.90 = 90,784.80 : x
  2. Step 2: Convert to fraction form
    141,785.64/195,606.90 = 90,784.80/x
  3. Step 3: Cross multiply
    141,785.64x = 195,606.90 × 90,784.80
  4. Step 4: Simplify right side
    141,785.64x = 17,758,133,295.12
  5. Step 5: Solve for x
    x = 17,758,133,295.12/141,785.64
  6. Step 6: Final answer
    x = 125,246.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.