Home / 146,907.20-220,628.10-128,536.40

Finding the Fourth Proportional to 146,907.20, 220,628.10 and 128,536.40

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Solution

The fourth proportional to 146,907.20, 220,628.10 and 128,536.40 is: 193,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,907.20 : 220,628.10 = 128,536.40 : x
  2. Step 2: Convert to fraction form
    146,907.20/220,628.10 = 128,536.40/x
  3. Step 3: Cross multiply
    146,907.20x = 220,628.10 × 128,536.40
  4. Step 4: Simplify right side
    146,907.20x = 28,358,741,712.84
  5. Step 5: Solve for x
    x = 28,358,741,712.84/146,907.20
  6. Step 6: Final answer
    x = 193,038.47

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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.