Home / 120,273.91-180,550.52-70,389.81

Finding the Fourth Proportional to 120,273.91, 180,550.52 and 70,389.81

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Solution

The fourth proportional to 120,273.91, 180,550.52 and 70,389.81 is: 105,666.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,273.91 : 180,550.52 = 70,389.81 : x
  2. Step 2: Convert to fraction form
    120,273.91/180,550.52 = 70,389.81/x
  3. Step 3: Cross multiply
    120,273.91x = 180,550.52 × 70,389.81
  4. Step 4: Simplify right side
    120,273.91x = 12,708,916,710.21
  5. Step 5: Solve for x
    x = 12,708,916,710.21/120,273.91
  6. Step 6: Final answer
    x = 105,666.44

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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.