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Finding the Fourth Proportional to 119,386.87, 164,750.40 and 65,671.88

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Solution

The fourth proportional to 119,386.87, 164,750.40 and 65,671.88 is: 90,625.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,386.87 : 164,750.40 = 65,671.88 : x
  2. Step 2: Convert to fraction form
    119,386.87/164,750.40 = 65,671.88/x
  3. Step 3: Cross multiply
    119,386.87x = 164,750.40 × 65,671.88
  4. Step 4: Simplify right side
    119,386.87x = 10,819,467,675
  5. Step 5: Solve for x
    x = 10,819,467,675/119,386.87
  6. Step 6: Final answer
    x = 90,625.27

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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.