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Finding the Fourth Proportional to 117,900.70, 162,706.34 and 64,186.61

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Solution

The fourth proportional to 117,900.70, 162,706.34 and 64,186.61 is: 88,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,900.70 : 162,706.34 = 64,186.61 : x
  2. Step 2: Convert to fraction form
    117,900.70/162,706.34 = 64,186.61/x
  3. Step 3: Cross multiply
    117,900.70x = 162,706.34 × 64,186.61
  4. Step 4: Simplify right side
    117,900.70x = 10,443,567,737.04
  5. Step 5: Solve for x
    x = 10,443,567,737.04/117,900.70
  6. Step 6: Final answer
    x = 88,579.35

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1.5x scale

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.