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Finding the Fourth Proportional to 100,008.58, 138,000.50 and 59,173.96

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Solution

The fourth proportional to 100,008.58, 138,000.50 and 59,173.96 is: 81,653.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,008.58 : 138,000.50 = 59,173.96 : x
  2. Step 2: Convert to fraction form
    100,008.58/138,000.50 = 59,173.96/x
  3. Step 3: Cross multiply
    100,008.58x = 138,000.50 × 59,173.96
  4. Step 4: Simplify right side
    100,008.58x = 8,166,036,239.62
  5. Step 5: Solve for x
    x = 8,166,036,239.62/100,008.58
  6. Step 6: Final answer
    x = 81,653.36

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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.