Home / 120,421.91-180,674.78-53,869.07

Finding the Fourth Proportional to 120,421.91, 180,674.78 and 53,869.07

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Solution

The fourth proportional to 120,421.91, 180,674.78 and 53,869.07 is: 80,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.91 : 180,674.78 = 53,869.07 : x
  2. Step 2: Convert to fraction form
    120,421.91/180,674.78 = 53,869.07/x
  3. Step 3: Cross multiply
    120,421.91x = 180,674.78 × 53,869.07
  4. Step 4: Simplify right side
    120,421.91x = 9,732,781,198.34
  5. Step 5: Solve for x
    x = 9,732,781,198.34/120,421.91
  6. Step 6: Final answer
    x = 80,822.35

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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.