Home / 205,389.30-307,565.55-134,886.90

Finding the Fourth Proportional to 205,389.30, 307,565.55 and 134,886.90

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Solution

The fourth proportional to 205,389.30, 307,565.55 and 134,886.90 is: 201,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,389.30 : 307,565.55 = 134,886.90 : x
  2. Step 2: Convert to fraction form
    205,389.30/307,565.55 = 134,886.90/x
  3. Step 3: Cross multiply
    205,389.30x = 307,565.55 × 134,886.90
  4. Step 4: Simplify right side
    205,389.30x = 41,486,563,586.30
  5. Step 5: Solve for x
    x = 41,486,563,586.30/205,389.30
  6. Step 6: Final answer
    x = 201,989.90

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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.