Home / 147,829.10-221,415.60-128,146.10

Finding the Fourth Proportional to 147,829.10, 221,415.60 and 128,146.10

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Solution

The fourth proportional to 147,829.10, 221,415.60 and 128,146.10 is: 191,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,829.10 : 221,415.60 = 128,146.10 : x
  2. Step 2: Convert to fraction form
    147,829.10/221,415.60 = 128,146.10/x
  3. Step 3: Cross multiply
    147,829.10x = 221,415.60 × 128,146.10
  4. Step 4: Simplify right side
    147,829.10x = 28,373,545,619.16
  5. Step 5: Solve for x
    x = 28,373,545,619.16/147,829.10
  6. Step 6: Final answer
    x = 191,934.78

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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.