Home / 121,819.62-182,710.92-42,915.36

Finding the Fourth Proportional to 121,819.62, 182,710.92 and 42,915.36

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Solution

The fourth proportional to 121,819.62, 182,710.92 and 42,915.36 is: 64,366.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,819.62 : 182,710.92 = 42,915.36 : x
  2. Step 2: Convert to fraction form
    121,819.62/182,710.92 = 42,915.36/x
  3. Step 3: Cross multiply
    121,819.62x = 182,710.92 × 42,915.36
  4. Step 4: Simplify right side
    121,819.62x = 7,841,104,907.73
  5. Step 5: Solve for x
    x = 7,841,104,907.73/121,819.62
  6. Step 6: Final answer
    x = 64,366.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.