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Finding the Fourth Proportional to 101,338.68, 139,845.86 and 56,015.66

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Solution

The fourth proportional to 101,338.68, 139,845.86 and 56,015.66 is: 77,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,338.68 : 139,845.86 = 56,015.66 : x
  2. Step 2: Convert to fraction form
    101,338.68/139,845.86 = 56,015.66/x
  3. Step 3: Cross multiply
    101,338.68x = 139,845.86 × 56,015.66
  4. Step 4: Simplify right side
    101,338.68x = 7,833,558,425.76
  5. Step 5: Solve for x
    x = 7,833,558,425.76/101,338.68
  6. Step 6: Final answer
    x = 77,300.77

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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.