Home / 127,974.20-191,702.10-72,505.40

Finding the Fourth Proportional to 127,974.20, 191,702.10 and 72,505.40

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Solution

The fourth proportional to 127,974.20, 191,702.10 and 72,505.40 is: 108,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,974.20 : 191,702.10 = 72,505.40 : x
  2. Step 2: Convert to fraction form
    127,974.20/191,702.10 = 72,505.40/x
  3. Step 3: Cross multiply
    127,974.20x = 191,702.10 × 72,505.40
  4. Step 4: Simplify right side
    127,974.20x = 13,899,437,441.34
  5. Step 5: Solve for x
    x = 13,899,437,441.34/127,974.20
  6. Step 6: Final answer
    x = 108,611.25

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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.