Home / 120,740.10-181,110.15-76,125.30

Finding the Fourth Proportional to 120,740.10, 181,110.15 and 76,125.30

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Solution

The fourth proportional to 120,740.10, 181,110.15 and 76,125.30 is: 114,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,740.10 : 181,110.15 = 76,125.30 : x
  2. Step 2: Convert to fraction form
    120,740.10/181,110.15 = 76,125.30/x
  3. Step 3: Cross multiply
    120,740.10x = 181,110.15 × 76,125.30
  4. Step 4: Simplify right side
    120,740.10x = 13,787,064,501.80
  5. Step 5: Solve for x
    x = 13,787,064,501.80/120,740.10
  6. Step 6: Final answer
    x = 114,187.95

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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.