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Finding the Fourth Proportional to 101,357.18, 139,871.94 and 56,036.28

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Solution

The fourth proportional to 101,357.18, 139,871.94 and 56,036.28 is: 77,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,357.18 : 139,871.94 = 56,036.28 : x
  2. Step 2: Convert to fraction form
    101,357.18/139,871.94 = 56,036.28/x
  3. Step 3: Cross multiply
    101,357.18x = 139,871.94 × 56,036.28
  4. Step 4: Simplify right side
    101,357.18x = 7,837,903,193.98
  5. Step 5: Solve for x
    x = 7,837,903,193.98/101,357.18
  6. Step 6: Final answer
    x = 77,329.53

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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.