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Finding the Fourth Proportional to 100,008.36, 137,946.51 and 64,141.56

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Solution

The fourth proportional to 100,008.36, 137,946.51 and 64,141.56 is: 88,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,008.36 : 137,946.51 = 64,141.56 : x
  2. Step 2: Convert to fraction form
    100,008.36/137,946.51 = 64,141.56/x
  3. Step 3: Cross multiply
    100,008.36x = 137,946.51 × 64,141.56
  4. Step 4: Simplify right side
    100,008.36x = 8,848,104,347.96
  5. Step 5: Solve for x
    x = 8,848,104,347.96/100,008.36
  6. Step 6: Final answer
    x = 88,473.65

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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.