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Finding the Fourth Proportional to 95,145, 130,950.54 and 81,563.76

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Solution

The fourth proportional to 95,145, 130,950.54 and 81,563.76 is: 112,258.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,145 : 130,950.54 = 81,563.76 : x
  2. Step 2: Convert to fraction form
    95,145/130,950.54 = 81,563.76/x
  3. Step 3: Cross multiply
    95,145x = 130,950.54 × 81,563.76
  4. Step 4: Simplify right side
    95,145x = 10,680,818,416.43
  5. Step 5: Solve for x
    x = 10,680,818,416.43/95,145
  6. Step 6: Final answer
    x = 112,258.33

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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.