Home / 205,145.10-307,686.87-64,885.50

Finding the Fourth Proportional to 205,145.10, 307,686.87 and 64,885.50

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Solution

The fourth proportional to 205,145.10, 307,686.87 and 64,885.50 is: 97,318.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,145.10 : 307,686.87 = 64,885.50 : x
  2. Step 2: Convert to fraction form
    205,145.10/307,686.87 = 64,885.50/x
  3. Step 3: Cross multiply
    205,145.10x = 307,686.87 × 64,885.50
  4. Step 4: Simplify right side
    205,145.10x = 19,964,416,403.39
  5. Step 5: Solve for x
    x = 19,964,416,403.39/205,145.10
  6. Step 6: Final answer
    x = 97,318.51

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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.