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Finding the Fourth Proportional to 101,998.46, 140,755.08 and 56,675.28

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Solution

The fourth proportional to 101,998.46, 140,755.08 and 56,675.28 is: 78,210.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,998.46 : 140,755.08 = 56,675.28 : x
  2. Step 2: Convert to fraction form
    101,998.46/140,755.08 = 56,675.28/x
  3. Step 3: Cross multiply
    101,998.46x = 140,755.08 × 56,675.28
  4. Step 4: Simplify right side
    101,998.46x = 7,977,333,519.04
  5. Step 5: Solve for x
    x = 7,977,333,519.04/101,998.46
  6. Step 6: Final answer
    x = 78,210.34

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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.