Home / 143,130.96-197,526.89-79,468.75

Finding the Fourth Proportional to 143,130.96, 197,526.89 and 79,468.75

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Solution

The fourth proportional to 143,130.96, 197,526.89 and 79,468.75 is: 109,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,130.96 : 197,526.89 = 79,468.75 : x
  2. Step 2: Convert to fraction form
    143,130.96/197,526.89 = 79,468.75/x
  3. Step 3: Cross multiply
    143,130.96x = 197,526.89 × 79,468.75
  4. Step 4: Simplify right side
    143,130.96x = 15,697,215,039.69
  5. Step 5: Solve for x
    x = 15,697,215,039.69/143,130.96
  6. Step 6: Final answer
    x = 109,670.30

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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.