Home / 143,567.50-198,121.14-79,905.30

Finding the Fourth Proportional to 143,567.50, 198,121.14 and 79,905.30

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Solution

The fourth proportional to 143,567.50, 198,121.14 and 79,905.30 is: 110,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,567.50 : 198,121.14 = 79,905.30 : x
  2. Step 2: Convert to fraction form
    143,567.50/198,121.14 = 79,905.30/x
  3. Step 3: Cross multiply
    143,567.50x = 198,121.14 × 79,905.30
  4. Step 4: Simplify right side
    143,567.50x = 15,830,929,128.04
  5. Step 5: Solve for x
    x = 15,830,929,128.04/143,567.50
  6. Step 6: Final answer
    x = 110,268.20

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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.