Home / 205,110.40-307,636.80-64,883.20

Finding the Fourth Proportional to 205,110.40, 307,636.80 and 64,883.20

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Solution

The fourth proportional to 205,110.40, 307,636.80 and 64,883.20 is: 97,315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,110.40 : 307,636.80 = 64,883.20 : x
  2. Step 2: Convert to fraction form
    205,110.40/307,636.80 = 64,883.20/x
  3. Step 3: Cross multiply
    205,110.40x = 307,636.80 × 64,883.20
  4. Step 4: Simplify right side
    205,110.40x = 19,960,460,021.76
  5. Step 5: Solve for x
    x = 19,960,460,021.76/205,110.40
  6. Step 6: Final answer
    x = 97,315.69

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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.