Home / 120,946.52-166,848.06-78,518.36

Finding the Fourth Proportional to 120,946.52, 166,848.06 and 78,518.36

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Solution

The fourth proportional to 120,946.52, 166,848.06 and 78,518.36 is: 108,317.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,946.52 : 166,848.06 = 78,518.36 : x
  2. Step 2: Convert to fraction form
    120,946.52/166,848.06 = 78,518.36/x
  3. Step 3: Cross multiply
    120,946.52x = 166,848.06 × 78,518.36
  4. Step 4: Simplify right side
    120,946.52x = 13,100,636,040.38
  5. Step 5: Solve for x
    x = 13,100,636,040.38/120,946.52
  6. Step 6: Final answer
    x = 108,317.59

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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.