Home / 147,622.20-220,850.10-128,117.40

Finding the Fourth Proportional to 147,622.20, 220,850.10 and 128,117.40

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Solution

The fourth proportional to 147,622.20, 220,850.10 and 128,117.40 is: 191,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,622.20 : 220,850.10 = 128,117.40 : x
  2. Step 2: Convert to fraction form
    147,622.20/220,850.10 = 128,117.40/x
  3. Step 3: Cross multiply
    147,622.20x = 220,850.10 × 128,117.40
  4. Step 4: Simplify right side
    147,622.20x = 28,294,740,601.74
  5. Step 5: Solve for x
    x = 28,294,740,601.74/147,622.20
  6. Step 6: Final answer
    x = 191,669.96

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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.