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Finding the Fourth Proportional to 143,064.68, 197,438.48 and 79,402.48

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Solution

The fourth proportional to 143,064.68, 197,438.48 and 79,402.48 is: 109,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,064.68 : 197,438.48 = 79,402.48 : x
  2. Step 2: Convert to fraction form
    143,064.68/197,438.48 = 79,402.48/x
  3. Step 3: Cross multiply
    143,064.68x = 197,438.48 × 79,402.48
  4. Step 4: Simplify right side
    143,064.68x = 15,677,104,664.34
  5. Step 5: Solve for x
    x = 15,677,104,664.34/143,064.68
  6. Step 6: Final answer
    x = 109,580.54

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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.