Home / 147,904.70-221,857.05-84,919.10

Finding the Fourth Proportional to 147,904.70, 221,857.05 and 84,919.10

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Solution

The fourth proportional to 147,904.70, 221,857.05 and 84,919.10 is: 127,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,904.70 : 221,857.05 = 84,919.10 : x
  2. Step 2: Convert to fraction form
    147,904.70/221,857.05 = 84,919.10/x
  3. Step 3: Cross multiply
    147,904.70x = 221,857.05 × 84,919.10
  4. Step 4: Simplify right side
    147,904.70x = 18,839,901,014.66
  5. Step 5: Solve for x
    x = 18,839,901,014.66/147,904.70
  6. Step 6: Final answer
    x = 127,378.65

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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.