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Finding the Fourth Proportional to 101,127.84, 139,562.64 and 56,415.84

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Solution

The fourth proportional to 101,127.84, 139,562.64 and 56,415.84 is: 77,857.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,127.84 : 139,562.64 = 56,415.84 : x
  2. Step 2: Convert to fraction form
    101,127.84/139,562.64 = 56,415.84/x
  3. Step 3: Cross multiply
    101,127.84x = 139,562.64 × 56,415.84
  4. Step 4: Simplify right side
    101,127.84x = 7,873,543,568.22
  5. Step 5: Solve for x
    x = 7,873,543,568.22/101,127.84
  6. Step 6: Final answer
    x = 77,857.33

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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.