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Finding the Fourth Proportional to 125,903.54, 173,728.86 and 72,190.82

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Solution

The fourth proportional to 125,903.54, 173,728.86 and 72,190.82 is: 99,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,903.54 : 173,728.86 = 72,190.82 : x
  2. Step 2: Convert to fraction form
    125,903.54/173,728.86 = 72,190.82/x
  3. Step 3: Cross multiply
    125,903.54x = 173,728.86 × 72,190.82
  4. Step 4: Simplify right side
    125,903.54x = 12,541,628,861.07
  5. Step 5: Solve for x
    x = 12,541,628,861.07/125,903.54
  6. Step 6: Final answer
    x = 99,613.00

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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.