Home / 143,145.56-197,549.08-79,487.46

Finding the Fourth Proportional to 143,145.56, 197,549.08 and 79,487.46

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Solution

The fourth proportional to 143,145.56, 197,549.08 and 79,487.46 is: 109,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,145.56 : 197,549.08 = 79,487.46 : x
  2. Step 2: Convert to fraction form
    143,145.56/197,549.08 = 79,487.46/x
  3. Step 3: Cross multiply
    143,145.56x = 197,549.08 × 79,487.46
  4. Step 4: Simplify right side
    143,145.56x = 15,702,674,395.82
  5. Step 5: Solve for x
    x = 15,702,674,395.82/143,145.56
  6. Step 6: Final answer
    x = 109,697.25

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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.