Home / 105,769.28-146,113.44-84,520.64

Finding the Fourth Proportional to 105,769.28, 146,113.44 and 84,520.64

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Solution

The fourth proportional to 105,769.28, 146,113.44 and 84,520.64 is: 116,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,769.28 : 146,113.44 = 84,520.64 : x
  2. Step 2: Convert to fraction form
    105,769.28/146,113.44 = 84,520.64/x
  3. Step 3: Cross multiply
    105,769.28x = 146,113.44 × 84,520.64
  4. Step 4: Simplify right side
    105,769.28x = 12,349,601,461.40
  5. Step 5: Solve for x
    x = 12,349,601,461.40/105,769.28
  6. Step 6: Final answer
    x = 116,759.81

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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.