Home / 137,547.06-206,320.58-90,789

Finding the Fourth Proportional to 137,547.06, 206,320.58 and 90,789

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Solution

The fourth proportional to 137,547.06, 206,320.58 and 90,789 is: 136,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,547.06 : 206,320.58 = 90,789 : x
  2. Step 2: Convert to fraction form
    137,547.06/206,320.58 = 90,789/x
  3. Step 3: Cross multiply
    137,547.06x = 206,320.58 × 90,789
  4. Step 4: Simplify right side
    137,547.06x = 18,731,639,137.62
  5. Step 5: Solve for x
    x = 18,731,639,137.62/137,547.06
  6. Step 6: Final answer
    x = 136,183.49

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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.