Home / 280,110.30-420,165.45-93,121.80

Finding the Fourth Proportional to 280,110.30, 420,165.45 and 93,121.80

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Solution

The fourth proportional to 280,110.30, 420,165.45 and 93,121.80 is: 139,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,110.30 : 420,165.45 = 93,121.80 : x
  2. Step 2: Convert to fraction form
    280,110.30/420,165.45 = 93,121.80/x
  3. Step 3: Cross multiply
    280,110.30x = 420,165.45 × 93,121.80
  4. Step 4: Simplify right side
    280,110.30x = 39,126,563,001.81
  5. Step 5: Solve for x
    x = 39,126,563,001.81/280,110.30
  6. Step 6: Final answer
    x = 139,682.70

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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.