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Finding the Fourth Proportional to 100,095.56, 138,127.30 and 57,660.20

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Solution

The fourth proportional to 100,095.56, 138,127.30 and 57,660.20 is: 79,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,095.56 : 138,127.30 = 57,660.20 : x
  2. Step 2: Convert to fraction form
    100,095.56/138,127.30 = 57,660.20/x
  3. Step 3: Cross multiply
    100,095.56x = 138,127.30 × 57,660.20
  4. Step 4: Simplify right side
    100,095.56x = 7,964,447,743.46
  5. Step 5: Solve for x
    x = 7,964,447,743.46/100,095.56
  6. Step 6: Final answer
    x = 79,568.44

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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.