Home / 173,428.85-260,143.28-90,312.05

Finding the Fourth Proportional to 173,428.85, 260,143.28 and 90,312.05

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Solution

The fourth proportional to 173,428.85, 260,143.28 and 90,312.05 is: 135,468.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,428.85 : 260,143.28 = 90,312.05 : x
  2. Step 2: Convert to fraction form
    173,428.85/260,143.28 = 90,312.05/x
  3. Step 3: Cross multiply
    173,428.85x = 260,143.28 × 90,312.05
  4. Step 4: Simplify right side
    173,428.85x = 23,494,072,458.96
  5. Step 5: Solve for x
    x = 23,494,072,458.96/173,428.85
  6. Step 6: Final answer
    x = 135,468.08

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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.