Home / 120,946.77-166,848.41-78,518.61

Finding the Fourth Proportional to 120,946.77, 166,848.41 and 78,518.61

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Solution

The fourth proportional to 120,946.77, 166,848.41 and 78,518.61 is: 108,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,946.77 : 166,848.41 = 78,518.61 : x
  2. Step 2: Convert to fraction form
    120,946.77/166,848.41 = 78,518.61/x
  3. Step 3: Cross multiply
    120,946.77x = 166,848.41 × 78,518.61
  4. Step 4: Simplify right side
    120,946.77x = 13,100,704,841.32
  5. Step 5: Solve for x
    x = 13,100,704,841.32/120,946.77
  6. Step 6: Final answer
    x = 108,317.94

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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.