Home / 101,918.89-140,625.42-61,631.81

Finding the Fourth Proportional to 101,918.89, 140,625.42 and 61,631.81

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Solution

The fourth proportional to 101,918.89, 140,625.42 and 61,631.81 is: 85,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,918.89 : 140,625.42 = 61,631.81 : x
  2. Step 2: Convert to fraction form
    101,918.89/140,625.42 = 61,631.81/x
  3. Step 3: Cross multiply
    101,918.89x = 140,625.42 × 61,631.81
  4. Step 4: Simplify right side
    101,918.89x = 8,666,999,166.61
  5. Step 5: Solve for x
    x = 8,666,999,166.61/101,918.89
  6. Step 6: Final answer
    x = 85,038.20

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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.