Home / 280,131.61-420,201.07-93,143.11

Finding the Fourth Proportional to 280,131.61, 420,201.07 and 93,143.11

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Solution

The fourth proportional to 280,131.61, 420,201.07 and 93,143.11 is: 139,715.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,131.61 : 420,201.07 = 93,143.11 : x
  2. Step 2: Convert to fraction form
    280,131.61/420,201.07 = 93,143.11/x
  3. Step 3: Cross multiply
    280,131.61x = 420,201.07 × 93,143.11
  4. Step 4: Simplify right side
    280,131.61x = 39,138,833,989.64
  5. Step 5: Solve for x
    x = 39,138,833,989.64/280,131.61
  6. Step 6: Final answer
    x = 139,715.88

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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.