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Finding the Fourth Proportional to 129,969.54, 179,358.03 and 70,353.54

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Solution

The fourth proportional to 129,969.54, 179,358.03 and 70,353.54 is: 97,087.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,969.54 : 179,358.03 = 70,353.54 : x
  2. Step 2: Convert to fraction form
    129,969.54/179,358.03 = 70,353.54/x
  3. Step 3: Cross multiply
    129,969.54x = 179,358.03 × 70,353.54
  4. Step 4: Simplify right side
    129,969.54x = 12,618,472,337.93
  5. Step 5: Solve for x
    x = 12,618,472,337.93/129,969.54
  6. Step 6: Final answer
    x = 97,087.92

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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.