Home / 120,800.20-180,617.10-89,307.40

Finding the Fourth Proportional to 120,800.20, 180,617.10 and 89,307.40

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Solution

The fourth proportional to 120,800.20, 180,617.10 and 89,307.40 is: 133,529.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,800.20 : 180,617.10 = 89,307.40 : x
  2. Step 2: Convert to fraction form
    120,800.20/180,617.10 = 89,307.40/x
  3. Step 3: Cross multiply
    120,800.20x = 180,617.10 × 89,307.40
  4. Step 4: Simplify right side
    120,800.20x = 16,130,443,596.54
  5. Step 5: Solve for x
    x = 16,130,443,596.54/120,800.20
  6. Step 6: Final answer
    x = 133,529.94

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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.