Home / 120,938.91-166,970.43-77,933.58

Finding the Fourth Proportional to 120,938.91, 166,970.43 and 77,933.58

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Solution

The fourth proportional to 120,938.91, 166,970.43 and 77,933.58 is: 107,596.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,938.91 : 166,970.43 = 77,933.58 : x
  2. Step 2: Convert to fraction form
    120,938.91/166,970.43 = 77,933.58/x
  3. Step 3: Cross multiply
    120,938.91x = 166,970.43 × 77,933.58
  4. Step 4: Simplify right side
    120,938.91x = 13,012,603,364.04
  5. Step 5: Solve for x
    x = 13,012,603,364.04/120,938.91
  6. Step 6: Final answer
    x = 107,596.50

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1.5x scale

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.