Home / 135,666.50-203,500.11-42,172.34

Finding the Fourth Proportional to 135,666.50, 203,500.11 and 42,172.34

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Solution

The fourth proportional to 135,666.50, 203,500.11 and 42,172.34 is: 63,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,666.50 : 203,500.11 = 42,172.34 : x
  2. Step 2: Convert to fraction form
    135,666.50/203,500.11 = 42,172.34/x
  3. Step 3: Cross multiply
    135,666.50x = 203,500.11 × 42,172.34
  4. Step 4: Simplify right side
    135,666.50x = 8,582,075,828.96
  5. Step 5: Solve for x
    x = 8,582,075,828.96/135,666.50
  6. Step 6: Final answer
    x = 63,258.62

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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.