Home / 143,090.12-197,462.90-79,426.28

Finding the Fourth Proportional to 143,090.12, 197,462.90 and 79,426.28

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Solution

The fourth proportional to 143,090.12, 197,462.90 and 79,426.28 is: 109,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,090.12 : 197,462.90 = 79,426.28 : x
  2. Step 2: Convert to fraction form
    143,090.12/197,462.90 = 79,426.28/x
  3. Step 3: Cross multiply
    143,090.12x = 197,462.90 × 79,426.28
  4. Step 4: Simplify right side
    143,090.12x = 15,683,743,585.01
  5. Step 5: Solve for x
    x = 15,683,743,585.01/143,090.12
  6. Step 6: Final answer
    x = 109,607.45

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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.