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Finding the Fourth Proportional to 130,343.70, 179,781.54 and 119,623.20

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Solution

The fourth proportional to 130,343.70, 179,781.54 and 119,623.20 is: 164,994.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,343.70 : 179,781.54 = 119,623.20 : x
  2. Step 2: Convert to fraction form
    130,343.70/179,781.54 = 119,623.20/x
  3. Step 3: Cross multiply
    130,343.70x = 179,781.54 × 119,623.20
  4. Step 4: Simplify right side
    130,343.70x = 21,506,043,115.73
  5. Step 5: Solve for x
    x = 21,506,043,115.73/130,343.70
  6. Step 6: Final answer
    x = 164,994.88

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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.