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Finding the Fourth Proportional to 180,043, 248,459.34 and 100,555

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Solution

The fourth proportional to 180,043, 248,459.34 and 100,555 is: 138,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,043 : 248,459.34 = 100,555 : x
  2. Step 2: Convert to fraction form
    180,043/248,459.34 = 100,555/x
  3. Step 3: Cross multiply
    180,043x = 248,459.34 × 100,555
  4. Step 4: Simplify right side
    180,043x = 24,983,828,933.70
  5. Step 5: Solve for x
    x = 24,983,828,933.70/180,043
  6. Step 6: Final answer
    x = 138,765.90

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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.