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Finding the Fourth Proportional to 119,045.70, 164,285.10 and 65,335.72

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Solution

The fourth proportional to 119,045.70, 164,285.10 and 65,335.72 is: 90,164.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,045.70 : 164,285.10 = 65,335.72 : x
  2. Step 2: Convert to fraction form
    119,045.70/164,285.10 = 65,335.72/x
  3. Step 3: Cross multiply
    119,045.70x = 164,285.10 × 65,335.72
  4. Step 4: Simplify right side
    119,045.70x = 10,733,685,293.77
  5. Step 5: Solve for x
    x = 10,733,685,293.77/119,045.70
  6. Step 6: Final answer
    x = 90,164.41

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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.