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Finding the Fourth Proportional to 101,953.35, 140,706.66 and 61,689.32

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Solution

The fourth proportional to 101,953.35, 140,706.66 and 61,689.32 is: 85,137.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,953.35 : 140,706.66 = 61,689.32 : x
  2. Step 2: Convert to fraction form
    101,953.35/140,706.66 = 61,689.32/x
  3. Step 3: Cross multiply
    101,953.35x = 140,706.66 × 61,689.32
  4. Step 4: Simplify right side
    101,953.35x = 8,680,097,471.34
  5. Step 5: Solve for x
    x = 8,680,097,471.34/101,953.35
  6. Step 6: Final answer
    x = 85,137.93

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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.