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Finding the Fourth Proportional to 101,083.64, 139,485.96 and 97,686.56

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Solution

The fourth proportional to 101,083.64, 139,485.96 and 97,686.56 is: 134,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,083.64 : 139,485.96 = 97,686.56 : x
  2. Step 2: Convert to fraction form
    101,083.64/139,485.96 = 97,686.56/x
  3. Step 3: Cross multiply
    101,083.64x = 139,485.96 × 97,686.56
  4. Step 4: Simplify right side
    101,083.64x = 13,625,903,600.70
  5. Step 5: Solve for x
    x = 13,625,903,600.70/101,083.64
  6. Step 6: Final answer
    x = 134,798.31

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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.