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Finding the Fourth Proportional to 105,881.32, 146,105.46 and 63,438.76

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Solution

The fourth proportional to 105,881.32, 146,105.46 and 63,438.76 is: 87,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,881.32 : 146,105.46 = 63,438.76 : x
  2. Step 2: Convert to fraction form
    105,881.32/146,105.46 = 63,438.76/x
  3. Step 3: Cross multiply
    105,881.32x = 146,105.46 × 63,438.76
  4. Step 4: Simplify right side
    105,881.32x = 9,268,749,211.63
  5. Step 5: Solve for x
    x = 9,268,749,211.63/105,881.32
  6. Step 6: Final answer
    x = 87,539.04

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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.