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Finding the Fourth Proportional to 119,040.70, 164,278.20 and 65,330.71

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Solution

The fourth proportional to 119,040.70, 164,278.20 and 65,330.71 is: 90,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,040.70 : 164,278.20 = 65,330.71 : x
  2. Step 2: Convert to fraction form
    119,040.70/164,278.20 = 65,330.71/x
  3. Step 3: Cross multiply
    119,040.70x = 164,278.20 × 65,330.71
  4. Step 4: Simplify right side
    119,040.70x = 10,732,411,443.52
  5. Step 5: Solve for x
    x = 10,732,411,443.52/119,040.70
  6. Step 6: Final answer
    x = 90,157.50

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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.