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Finding the Fourth Proportional to 130,035.39, 195,208.65 and 77,469.63

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Solution

The fourth proportional to 130,035.39, 195,208.65 and 77,469.63 is: 116,297.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,035.39 : 195,208.65 = 77,469.63 : x
  2. Step 2: Convert to fraction form
    130,035.39/195,208.65 = 77,469.63/x
  3. Step 3: Cross multiply
    130,035.39x = 195,208.65 × 77,469.63
  4. Step 4: Simplify right side
    130,035.39x = 15,122,741,888.30
  5. Step 5: Solve for x
    x = 15,122,741,888.30/130,035.39
  6. Step 6: Final answer
    x = 116,297.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.