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Finding the Fourth Proportional to 117,871.76, 162,666.70 and 64,160.39

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Solution

The fourth proportional to 117,871.76, 162,666.70 and 64,160.39 is: 88,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,871.76 : 162,666.70 = 64,160.39 : x
  2. Step 2: Convert to fraction form
    117,871.76/162,666.70 = 64,160.39/x
  3. Step 3: Cross multiply
    117,871.76x = 162,666.70 × 64,160.39
  4. Step 4: Simplify right side
    117,871.76x = 10,436,759,158.28
  5. Step 5: Solve for x
    x = 10,436,759,158.28/117,871.76
  6. Step 6: Final answer
    x = 88,543.34

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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.