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Finding the Fourth Proportional to 101,341.62, 139,817.34 and 65,576.88

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Solution

The fourth proportional to 101,341.62, 139,817.34 and 65,576.88 is: 90,474.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,341.62 : 139,817.34 = 65,576.88 : x
  2. Step 2: Convert to fraction form
    101,341.62/139,817.34 = 65,576.88/x
  3. Step 3: Cross multiply
    101,341.62x = 139,817.34 × 65,576.88
  4. Step 4: Simplify right side
    101,341.62x = 9,168,784,927.10
  5. Step 5: Solve for x
    x = 9,168,784,927.10/101,341.62
  6. Step 6: Final answer
    x = 90,474.03

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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.