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Finding the Fourth Proportional to 138,485.80, 207,777.30 and 59,624.20

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Solution

The fourth proportional to 138,485.80, 207,777.30 and 59,624.20 is: 89,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485.80 : 207,777.30 = 59,624.20 : x
  2. Step 2: Convert to fraction form
    138,485.80/207,777.30 = 59,624.20/x
  3. Step 3: Cross multiply
    138,485.80x = 207,777.30 × 59,624.20
  4. Step 4: Simplify right side
    138,485.80x = 12,388,555,290.66
  5. Step 5: Solve for x
    x = 12,388,555,290.66/138,485.80
  6. Step 6: Final answer
    x = 89,457.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.