Home / 205,108.40-307,633.80-64,881.20

Finding the Fourth Proportional to 205,108.40, 307,633.80 and 64,881.20

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Solution

The fourth proportional to 205,108.40, 307,633.80 and 64,881.20 is: 97,312.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,108.40 : 307,633.80 = 64,881.20 : x
  2. Step 2: Convert to fraction form
    205,108.40/307,633.80 = 64,881.20/x
  3. Step 3: Cross multiply
    205,108.40x = 307,633.80 × 64,881.20
  4. Step 4: Simplify right side
    205,108.40x = 19,959,650,104.56
  5. Step 5: Solve for x
    x = 19,959,650,104.56/205,108.40
  6. Step 6: Final answer
    x = 97,312.69

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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.