Home / 111,990.30-167,985.45-99,743.10

Finding the Fourth Proportional to 111,990.30, 167,985.45 and 99,743.10

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Solution

The fourth proportional to 111,990.30, 167,985.45 and 99,743.10 is: 149,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.30 : 167,985.45 = 99,743.10 : x
  2. Step 2: Convert to fraction form
    111,990.30/167,985.45 = 99,743.10/x
  3. Step 3: Cross multiply
    111,990.30x = 167,985.45 × 99,743.10
  4. Step 4: Simplify right side
    111,990.30x = 16,755,389,537.90
  5. Step 5: Solve for x
    x = 16,755,389,537.90/111,990.30
  6. Step 6: Final answer
    x = 149,614.65

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1.5x scale

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.