Home / 205,864.90-308,826.15-87,535.30

Finding the Fourth Proportional to 205,864.90, 308,826.15 and 87,535.30

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Solution

The fourth proportional to 205,864.90, 308,826.15 and 87,535.30 is: 131,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,864.90 : 308,826.15 = 87,535.30 : x
  2. Step 2: Convert to fraction form
    205,864.90/308,826.15 = 87,535.30/x
  3. Step 3: Cross multiply
    205,864.90x = 308,826.15 × 87,535.30
  4. Step 4: Simplify right side
    205,864.90x = 27,033,189,688.10
  5. Step 5: Solve for x
    x = 27,033,189,688.10/205,864.90
  6. Step 6: Final answer
    x = 131,315.20

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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.