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Finding the Fourth Proportional to 119,812.20, 179,718.30 and 84,820.20

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Solution

The fourth proportional to 119,812.20, 179,718.30 and 84,820.20 is: 127,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,812.20 : 179,718.30 = 84,820.20 : x
  2. Step 2: Convert to fraction form
    119,812.20/179,718.30 = 84,820.20/x
  3. Step 3: Cross multiply
    119,812.20x = 179,718.30 × 84,820.20
  4. Step 4: Simplify right side
    119,812.20x = 15,243,742,149.66
  5. Step 5: Solve for x
    x = 15,243,742,149.66/119,812.20
  6. Step 6: Final answer
    x = 127,230.30

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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.