Home / 147,443.20-221,164.80-68,711.20

Finding the Fourth Proportional to 147,443.20, 221,164.80 and 68,711.20

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Solution

The fourth proportional to 147,443.20, 221,164.80 and 68,711.20 is: 103,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,443.20 : 221,164.80 = 68,711.20 : x
  2. Step 2: Convert to fraction form
    147,443.20/221,164.80 = 68,711.20/x
  3. Step 3: Cross multiply
    147,443.20x = 221,164.80 × 68,711.20
  4. Step 4: Simplify right side
    147,443.20x = 15,196,498,805.76
  5. Step 5: Solve for x
    x = 15,196,498,805.76/147,443.20
  6. Step 6: Final answer
    x = 103,066.80

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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.