Home / 136,913.40-205,370.10-89,674.20

Finding the Fourth Proportional to 136,913.40, 205,370.10 and 89,674.20

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Solution

The fourth proportional to 136,913.40, 205,370.10 and 89,674.20 is: 134,511.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,913.40 : 205,370.10 = 89,674.20 : x
  2. Step 2: Convert to fraction form
    136,913.40/205,370.10 = 89,674.20/x
  3. Step 3: Cross multiply
    136,913.40x = 205,370.10 × 89,674.20
  4. Step 4: Simplify right side
    136,913.40x = 18,416,399,421.42
  5. Step 5: Solve for x
    x = 18,416,399,421.42/136,913.40
  6. Step 6: Final answer
    x = 134,511.30

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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.