Home / 111,001.40-166,502.10-100,287.80

Finding the Fourth Proportional to 111,001.40, 166,502.10 and 100,287.80

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Solution

The fourth proportional to 111,001.40, 166,502.10 and 100,287.80 is: 150,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,001.40 : 166,502.10 = 100,287.80 : x
  2. Step 2: Convert to fraction form
    111,001.40/166,502.10 = 100,287.80/x
  3. Step 3: Cross multiply
    111,001.40x = 166,502.10 × 100,287.80
  4. Step 4: Simplify right side
    111,001.40x = 16,698,129,304.38
  5. Step 5: Solve for x
    x = 16,698,129,304.38/111,001.40
  6. Step 6: Final answer
    x = 150,431.70

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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.