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Finding the Fourth Proportional to 118,060.40, 162,929.12 and 66,393.76

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Solution

The fourth proportional to 118,060.40, 162,929.12 and 66,393.76 is: 91,626.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,060.40 : 162,929.12 = 66,393.76 : x
  2. Step 2: Convert to fraction form
    118,060.40/162,929.12 = 66,393.76/x
  3. Step 3: Cross multiply
    118,060.40x = 162,929.12 × 66,393.76
  4. Step 4: Simplify right side
    118,060.40x = 10,817,476,890.29
  5. Step 5: Solve for x
    x = 10,817,476,890.29/118,060.40
  6. Step 6: Final answer
    x = 91,626.63

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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.