Home / 280,110.15-420,110.55-93,121.65

Finding the Fourth Proportional to 280,110.15, 420,110.55 and 93,121.65

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Solution

The fourth proportional to 280,110.15, 420,110.55 and 93,121.65 is: 139,664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,110.15 : 420,110.55 = 93,121.65 : x
  2. Step 2: Convert to fraction form
    280,110.15/420,110.55 = 93,121.65/x
  3. Step 3: Cross multiply
    280,110.15x = 420,110.55 × 93,121.65
  4. Step 4: Simplify right side
    280,110.15x = 39,121,387,598.41
  5. Step 5: Solve for x
    x = 39,121,387,598.41/280,110.15
  6. Step 6: Final answer
    x = 139,664.30

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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.