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Finding the Fourth Proportional to 119,785.70, 179,639.66 and 39,802.20

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Solution

The fourth proportional to 119,785.70, 179,639.66 and 39,802.20 is: 59,690.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,785.70 : 179,639.66 = 39,802.20 : x
  2. Step 2: Convert to fraction form
    119,785.70/179,639.66 = 39,802.20/x
  3. Step 3: Cross multiply
    119,785.70x = 179,639.66 × 39,802.20
  4. Step 4: Simplify right side
    119,785.70x = 7,150,053,101.11
  5. Step 5: Solve for x
    x = 7,150,053,101.11/119,785.70
  6. Step 6: Final answer
    x = 59,690.37

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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.