Home / 111,918.30-167,877.45-100,643.10

Finding the Fourth Proportional to 111,918.30, 167,877.45 and 100,643.10

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Solution

The fourth proportional to 111,918.30, 167,877.45 and 100,643.10 is: 150,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,918.30 : 167,877.45 = 100,643.10 : x
  2. Step 2: Convert to fraction form
    111,918.30/167,877.45 = 100,643.10/x
  3. Step 3: Cross multiply
    111,918.30x = 167,877.45 × 100,643.10
  4. Step 4: Simplify right side
    111,918.30x = 16,895,706,988.10
  5. Step 5: Solve for x
    x = 16,895,706,988.10/111,918.30
  6. Step 6: Final answer
    x = 150,964.65

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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.