Home / 128,246.40-176,925.60-80,467.20

Finding the Fourth Proportional to 128,246.40, 176,925.60 and 80,467.20

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Solution

The fourth proportional to 128,246.40, 176,925.60 and 80,467.20 is: 111,010.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.40 : 176,925.60 = 80,467.20 : x
  2. Step 2: Convert to fraction form
    128,246.40/176,925.60 = 80,467.20/x
  3. Step 3: Cross multiply
    128,246.40x = 176,925.60 × 80,467.20
  4. Step 4: Simplify right side
    128,246.40x = 14,236,707,640.32
  5. Step 5: Solve for x
    x = 14,236,707,640.32/128,246.40
  6. Step 6: Final answer
    x = 111,010.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.