Home / 147,828.60-221,414.85-128,145.60

Finding the Fourth Proportional to 147,828.60, 221,414.85 and 128,145.60

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Solution

The fourth proportional to 147,828.60, 221,414.85 and 128,145.60 is: 191,934.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,828.60 : 221,414.85 = 128,145.60 : x
  2. Step 2: Convert to fraction form
    147,828.60/221,414.85 = 128,145.60/x
  3. Step 3: Cross multiply
    147,828.60x = 221,414.85 × 128,145.60
  4. Step 4: Simplify right side
    147,828.60x = 28,373,338,802.16
  5. Step 5: Solve for x
    x = 28,373,338,802.16/147,828.60
  6. Step 6: Final answer
    x = 191,934.03

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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.