Home / 147,812.20-221,718.30-139,647.40

Finding the Fourth Proportional to 147,812.20, 221,718.30 and 139,647.40

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Solution

The fourth proportional to 147,812.20, 221,718.30 and 139,647.40 is: 209,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,812.20 : 221,718.30 = 139,647.40 : x
  2. Step 2: Convert to fraction form
    147,812.20/221,718.30 = 139,647.40/x
  3. Step 3: Cross multiply
    147,812.20x = 221,718.30 × 139,647.40
  4. Step 4: Simplify right side
    147,812.20x = 30,962,384,127.42
  5. Step 5: Solve for x
    x = 30,962,384,127.42/147,812.20
  6. Step 6: Final answer
    x = 209,471.10

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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.