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Finding the Fourth Proportional to 100,311.01, 138,430.74 and 60,026.47

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Solution

The fourth proportional to 100,311.01, 138,430.74 and 60,026.47 is: 82,837.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,311.01 : 138,430.74 = 60,026.47 : x
  2. Step 2: Convert to fraction form
    100,311.01/138,430.74 = 60,026.47/x
  3. Step 3: Cross multiply
    100,311.01x = 138,430.74 × 60,026.47
  4. Step 4: Simplify right side
    100,311.01x = 8,309,508,661.69
  5. Step 5: Solve for x
    x = 8,309,508,661.69/100,311.01
  6. Step 6: Final answer
    x = 82,837.45

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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.