Home / 163,637.30-245,513.55-80,475.70

Finding the Fourth Proportional to 163,637.30, 245,513.55 and 80,475.70

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Solution

The fourth proportional to 163,637.30, 245,513.55 and 80,475.70 is: 120,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,637.30 : 245,513.55 = 80,475.70 : x
  2. Step 2: Convert to fraction form
    163,637.30/245,513.55 = 80,475.70/x
  3. Step 3: Cross multiply
    163,637.30x = 245,513.55 × 80,475.70
  4. Step 4: Simplify right side
    163,637.30x = 19,757,874,795.74
  5. Step 5: Solve for x
    x = 19,757,874,795.74/163,637.30
  6. Step 6: Final answer
    x = 120,741.88

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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.