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Finding the Fourth Proportional to 101,619.36, 140,113.80 and 70,495.92

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Solution

The fourth proportional to 101,619.36, 140,113.80 and 70,495.92 is: 97,200.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,619.36 : 140,113.80 = 70,495.92 : x
  2. Step 2: Convert to fraction form
    101,619.36/140,113.80 = 70,495.92/x
  3. Step 3: Cross multiply
    101,619.36x = 140,113.80 × 70,495.92
  4. Step 4: Simplify right side
    101,619.36x = 9,877,451,235.70
  5. Step 5: Solve for x
    x = 9,877,451,235.70/101,619.36
  6. Step 6: Final answer
    x = 97,200.49

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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.