Home / 218,775.04-328,099.84-85,560.96

Finding the Fourth Proportional to 218,775.04, 328,099.84 and 85,560.96

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Solution

The fourth proportional to 218,775.04, 328,099.84 and 85,560.96 is: 128,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,775.04 : 328,099.84 = 85,560.96 : x
  2. Step 2: Convert to fraction form
    218,775.04/328,099.84 = 85,560.96/x
  3. Step 3: Cross multiply
    218,775.04x = 328,099.84 × 85,560.96
  4. Step 4: Simplify right side
    218,775.04x = 28,072,537,286.25
  5. Step 5: Solve for x
    x = 28,072,537,286.25/218,775.04
  6. Step 6: Final answer
    x = 128,316.91

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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.