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Finding the Fourth Proportional to 180,215.67, 248,687.58 and 99,638.49

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Solution

The fourth proportional to 180,215.67, 248,687.58 and 99,638.49 is: 137,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,215.67 : 248,687.58 = 99,638.49 : x
  2. Step 2: Convert to fraction form
    180,215.67/248,687.58 = 99,638.49/x
  3. Step 3: Cross multiply
    180,215.67x = 248,687.58 × 99,638.49
  4. Step 4: Simplify right side
    180,215.67x = 24,778,854,952.95
  5. Step 5: Solve for x
    x = 24,778,854,952.95/180,215.67
  6. Step 6: Final answer
    x = 137,495.56

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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.