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Finding the Fourth Proportional to 127,246.80, 190,870.20 and 74,715.60

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Solution

The fourth proportional to 127,246.80, 190,870.20 and 74,715.60 is: 112,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,246.80 : 190,870.20 = 74,715.60 : x
  2. Step 2: Convert to fraction form
    127,246.80/190,870.20 = 74,715.60/x
  3. Step 3: Cross multiply
    127,246.80x = 190,870.20 × 74,715.60
  4. Step 4: Simplify right side
    127,246.80x = 14,260,981,515.12
  5. Step 5: Solve for x
    x = 14,260,981,515.12/127,246.80
  6. Step 6: Final answer
    x = 112,073.40

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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.