Home / 135,939.87-203,913.99-64,870.20

Finding the Fourth Proportional to 135,939.87, 203,913.99 and 64,870.20

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Solution

The fourth proportional to 135,939.87, 203,913.99 and 64,870.20 is: 97,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,939.87 : 203,913.99 = 64,870.20 : x
  2. Step 2: Convert to fraction form
    135,939.87/203,913.99 = 64,870.20/x
  3. Step 3: Cross multiply
    135,939.87x = 203,913.99 × 64,870.20
  4. Step 4: Simplify right side
    135,939.87x = 13,227,941,314.10
  5. Step 5: Solve for x
    x = 13,227,941,314.10/135,939.87
  6. Step 6: Final answer
    x = 97,307.30

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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.