Home / 120,860.10-181,117.35-89,021.70

Finding the Fourth Proportional to 120,860.10, 181,117.35 and 89,021.70

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Solution

The fourth proportional to 120,860.10, 181,117.35 and 89,021.70 is: 133,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,860.10 : 181,117.35 = 89,021.70 : x
  2. Step 2: Convert to fraction form
    120,860.10/181,117.35 = 89,021.70/x
  3. Step 3: Cross multiply
    120,860.10x = 181,117.35 × 89,021.70
  4. Step 4: Simplify right side
    120,860.10x = 16,123,374,396.50
  5. Step 5: Solve for x
    x = 16,123,374,396.50/120,860.10
  6. Step 6: Final answer
    x = 133,405.27

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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.