Home / 205,359.90-307,809.45-87,011.10

Finding the Fourth Proportional to 205,359.90, 307,809.45 and 87,011.10

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Solution

The fourth proportional to 205,359.90, 307,809.45 and 87,011.10 is: 130,419.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,359.90 : 307,809.45 = 87,011.10 : x
  2. Step 2: Convert to fraction form
    205,359.90/307,809.45 = 87,011.10/x
  3. Step 3: Cross multiply
    205,359.90x = 307,809.45 × 87,011.10
  4. Step 4: Simplify right side
    205,359.90x = 26,782,838,834.90
  5. Step 5: Solve for x
    x = 26,782,838,834.90/205,359.90
  6. Step 6: Final answer
    x = 130,419.03

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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.