Home / 103,872.30-143,373.18-61,445.58

Finding the Fourth Proportional to 103,872.30, 143,373.18 and 61,445.58

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Solution

The fourth proportional to 103,872.30, 143,373.18 and 61,445.58 is: 84,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,872.30 : 143,373.18 = 61,445.58 : x
  2. Step 2: Convert to fraction form
    103,872.30/143,373.18 = 61,445.58/x
  3. Step 3: Cross multiply
    103,872.30x = 143,373.18 × 61,445.58
  4. Step 4: Simplify right side
    103,872.30x = 8,809,648,201.54
  5. Step 5: Solve for x
    x = 8,809,648,201.54/103,872.30
  6. Step 6: Final answer
    x = 84,812.30

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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.