Home / 111,505.40-167,258.10-102,519.80

Finding the Fourth Proportional to 111,505.40, 167,258.10 and 102,519.80

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Solution

The fourth proportional to 111,505.40, 167,258.10 and 102,519.80 is: 153,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,505.40 : 167,258.10 = 102,519.80 : x
  2. Step 2: Convert to fraction form
    111,505.40/167,258.10 = 102,519.80/x
  3. Step 3: Cross multiply
    111,505.40x = 167,258.10 × 102,519.80
  4. Step 4: Simplify right side
    111,505.40x = 17,147,266,960.38
  5. Step 5: Solve for x
    x = 17,147,266,960.38/111,505.40
  6. Step 6: Final answer
    x = 153,779.70

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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.