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Finding the Fourth Proportional to 119,449.92, 164,840.70 and 65,738.40

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Solution

The fourth proportional to 119,449.92, 164,840.70 and 65,738.40 is: 90,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,449.92 : 164,840.70 = 65,738.40 : x
  2. Step 2: Convert to fraction form
    119,449.92/164,840.70 = 65,738.40/x
  3. Step 3: Cross multiply
    119,449.92x = 164,840.70 × 65,738.40
  4. Step 4: Simplify right side
    119,449.92x = 10,836,363,872.88
  5. Step 5: Solve for x
    x = 10,836,363,872.88/119,449.92
  6. Step 6: Final answer
    x = 90,718.89

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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.