Home / 109,685.28-151,364.52-61,935.84

Finding the Fourth Proportional to 109,685.28, 151,364.52 and 61,935.84

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Solution

The fourth proportional to 109,685.28, 151,364.52 and 61,935.84 is: 85,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,685.28 : 151,364.52 = 61,935.84 : x
  2. Step 2: Convert to fraction form
    109,685.28/151,364.52 = 61,935.84/x
  3. Step 3: Cross multiply
    109,685.28x = 151,364.52 × 61,935.84
  4. Step 4: Simplify right side
    109,685.28x = 9,374,888,692.40
  5. Step 5: Solve for x
    x = 9,374,888,692.40/109,685.28
  6. Step 6: Final answer
    x = 85,470.80

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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.