Home / 280,120.60-420,180.90-93,132.10

Finding the Fourth Proportional to 280,120.60, 420,180.90 and 93,132.10

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Solution

The fourth proportional to 280,120.60, 420,180.90 and 93,132.10 is: 139,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,120.60 : 420,180.90 = 93,132.10 : x
  2. Step 2: Convert to fraction form
    280,120.60/420,180.90 = 93,132.10/x
  3. Step 3: Cross multiply
    280,120.60x = 420,180.90 × 93,132.10
  4. Step 4: Simplify right side
    280,120.60x = 39,132,329,596.89
  5. Step 5: Solve for x
    x = 39,132,329,596.89/280,120.60
  6. Step 6: Final answer
    x = 139,698.15

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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.