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Finding the Fourth Proportional to 101,051.12, 139,449.12 and 58,616.84

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Solution

The fourth proportional to 101,051.12, 139,449.12 and 58,616.84 is: 80,890.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,051.12 : 139,449.12 = 58,616.84 : x
  2. Step 2: Convert to fraction form
    101,051.12/139,449.12 = 58,616.84/x
  3. Step 3: Cross multiply
    101,051.12x = 139,449.12 × 58,616.84
  4. Step 4: Simplify right side
    101,051.12x = 8,174,066,755.18
  5. Step 5: Solve for x
    x = 8,174,066,755.18/101,051.12
  6. Step 6: Final answer
    x = 80,890.41

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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.