Home / 105,761.28-146,102.40-84,512.64

Finding the Fourth Proportional to 105,761.28, 146,102.40 and 84,512.64

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Solution

The fourth proportional to 105,761.28, 146,102.40 and 84,512.64 is: 116,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,761.28 : 146,102.40 = 84,512.64 : x
  2. Step 2: Convert to fraction form
    105,761.28/146,102.40 = 84,512.64/x
  3. Step 3: Cross multiply
    105,761.28x = 146,102.40 × 84,512.64
  4. Step 4: Simplify right side
    105,761.28x = 12,347,499,534.34
  5. Step 5: Solve for x
    x = 12,347,499,534.34/105,761.28
  6. Step 6: Final answer
    x = 116,748.77

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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.