Home / 120,845.10-181,267.65-76,230.30

Finding the Fourth Proportional to 120,845.10, 181,267.65 and 76,230.30

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Solution

The fourth proportional to 120,845.10, 181,267.65 and 76,230.30 is: 114,345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,845.10 : 181,267.65 = 76,230.30 : x
  2. Step 2: Convert to fraction form
    120,845.10/181,267.65 = 76,230.30/x
  3. Step 3: Cross multiply
    120,845.10x = 181,267.65 × 76,230.30
  4. Step 4: Simplify right side
    120,845.10x = 13,818,087,339.80
  5. Step 5: Solve for x
    x = 13,818,087,339.80/120,845.10
  6. Step 6: Final answer
    x = 114,345.45

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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.