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Finding the Fourth Proportional to 119,438.34, 164,820.79 and 65,718.33

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Solution

The fourth proportional to 119,438.34, 164,820.79 and 65,718.33 is: 90,689.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,438.34 : 164,820.79 = 65,718.33 : x
  2. Step 2: Convert to fraction form
    119,438.34/164,820.79 = 65,718.33/x
  3. Step 3: Cross multiply
    119,438.34x = 164,820.79 × 65,718.33
  4. Step 4: Simplify right side
    119,438.34x = 10,831,747,068.08
  5. Step 5: Solve for x
    x = 10,831,747,068.08/119,438.34
  6. Step 6: Final answer
    x = 90,689.03

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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.