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Finding the Fourth Proportional to 127,474.80, 191,147.40 and 74,900.40

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Solution

The fourth proportional to 127,474.80, 191,147.40 and 74,900.40 is: 112,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,474.80 : 191,147.40 = 74,900.40 : x
  2. Step 2: Convert to fraction form
    127,474.80/191,147.40 = 74,900.40/x
  3. Step 3: Cross multiply
    127,474.80x = 191,147.40 × 74,900.40
  4. Step 4: Simplify right side
    127,474.80x = 14,317,016,718.96
  5. Step 5: Solve for x
    x = 14,317,016,718.96/127,474.80
  6. Step 6: Final answer
    x = 112,312.53

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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.