Home / 157,087.70-235,631.55-82,178.90

Finding the Fourth Proportional to 157,087.70, 235,631.55 and 82,178.90

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Solution

The fourth proportional to 157,087.70, 235,631.55 and 82,178.90 is: 123,268.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,087.70 : 235,631.55 = 82,178.90 : x
  2. Step 2: Convert to fraction form
    157,087.70/235,631.55 = 82,178.90/x
  3. Step 3: Cross multiply
    157,087.70x = 235,631.55 × 82,178.90
  4. Step 4: Simplify right side
    157,087.70x = 19,363,941,584.30
  5. Step 5: Solve for x
    x = 19,363,941,584.30/157,087.70
  6. Step 6: Final answer
    x = 123,268.35

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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.