Home / 205,111.40-307,638.30-64,884.20

Finding the Fourth Proportional to 205,111.40, 307,638.30 and 64,884.20

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Solution

The fourth proportional to 205,111.40, 307,638.30 and 64,884.20 is: 97,317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,111.40 : 307,638.30 = 64,884.20 : x
  2. Step 2: Convert to fraction form
    205,111.40/307,638.30 = 64,884.20/x
  3. Step 3: Cross multiply
    205,111.40x = 307,638.30 × 64,884.20
  4. Step 4: Simplify right side
    205,111.40x = 19,960,864,984.86
  5. Step 5: Solve for x
    x = 19,960,864,984.86/205,111.40
  6. Step 6: Final answer
    x = 97,317.19

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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.