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Finding the Fourth Proportional to 119,785.81, 179,639.84 and 39,802.30

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Solution

The fourth proportional to 119,785.81, 179,639.84 and 39,802.30 is: 59,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,785.81 : 179,639.84 = 39,802.30 : x
  2. Step 2: Convert to fraction form
    119,785.81/179,639.84 = 39,802.30/x
  3. Step 3: Cross multiply
    119,785.81x = 179,639.84 × 39,802.30
  4. Step 4: Simplify right side
    119,785.81x = 7,150,078,454.04
  5. Step 5: Solve for x
    x = 7,150,078,454.04/119,785.81
  6. Step 6: Final answer
    x = 59,690.53

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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.