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Finding the Fourth Proportional to 161,118.48, 221,554.80 and 139,860.48

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Solution

The fourth proportional to 161,118.48, 221,554.80 and 139,860.48 is: 192,322.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,118.48 : 221,554.80 = 139,860.48 : x
  2. Step 2: Convert to fraction form
    161,118.48/221,554.80 = 139,860.48/x
  3. Step 3: Cross multiply
    161,118.48x = 221,554.80 × 139,860.48
  4. Step 4: Simplify right side
    161,118.48x = 30,986,760,674.30
  5. Step 5: Solve for x
    x = 30,986,760,674.30/161,118.48
  6. Step 6: Final answer
    x = 192,322.82

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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.