Home / 102,059.31-140,844.74-61,780.35

Finding the Fourth Proportional to 102,059.31, 140,844.74 and 61,780.35

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Solution

The fourth proportional to 102,059.31, 140,844.74 and 61,780.35 is: 85,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,059.31 : 140,844.74 = 61,780.35 : x
  2. Step 2: Convert to fraction form
    102,059.31/140,844.74 = 61,780.35/x
  3. Step 3: Cross multiply
    102,059.31x = 140,844.74 × 61,780.35
  4. Step 4: Simplify right side
    102,059.31x = 8,701,437,023.96
  5. Step 5: Solve for x
    x = 8,701,437,023.96/102,059.31
  6. Step 6: Final answer
    x = 85,258.63

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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.