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Finding the Fourth Proportional to 129,735.72, 179,035.21 and 70,119.72

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Solution

The fourth proportional to 129,735.72, 179,035.21 and 70,119.72 is: 96,765.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,735.72 : 179,035.21 = 70,119.72 : x
  2. Step 2: Convert to fraction form
    129,735.72/179,035.21 = 70,119.72/x
  3. Step 3: Cross multiply
    129,735.72x = 179,035.21 × 70,119.72
  4. Step 4: Simplify right side
    129,735.72x = 12,553,898,795.34
  5. Step 5: Solve for x
    x = 12,553,898,795.34/129,735.72
  6. Step 6: Final answer
    x = 96,765.17

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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.