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Finding the Fourth Proportional to 124,910.40, 187,365.60 and 72,422.40

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Solution

The fourth proportional to 124,910.40, 187,365.60 and 72,422.40 is: 108,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,910.40 : 187,365.60 = 72,422.40 : x
  2. Step 2: Convert to fraction form
    124,910.40/187,365.60 = 72,422.40/x
  3. Step 3: Cross multiply
    124,910.40x = 187,365.60 × 72,422.40
  4. Step 4: Simplify right side
    124,910.40x = 13,569,466,429.44
  5. Step 5: Solve for x
    x = 13,569,466,429.44/124,910.40
  6. Step 6: Final answer
    x = 108,633.60

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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.