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Finding the Fourth Proportional to 100,433.59, 138,602.44 and 60,139.33

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Solution

The fourth proportional to 100,433.59, 138,602.44 and 60,139.33 is: 82,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,433.59 : 138,602.44 = 60,139.33 : x
  2. Step 2: Convert to fraction form
    100,433.59/138,602.44 = 60,139.33/x
  3. Step 3: Cross multiply
    100,433.59x = 138,602.44 × 60,139.33
  4. Step 4: Simplify right side
    100,433.59x = 8,335,457,606.63
  5. Step 5: Solve for x
    x = 8,335,457,606.63/100,433.59
  6. Step 6: Final answer
    x = 82,994.72

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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.