Home / 289,732.12-434,612.70-102,758.20

Finding the Fourth Proportional to 289,732.12, 434,612.70 and 102,758.20

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Solution

The fourth proportional to 289,732.12, 434,612.70 and 102,758.20 is: 154,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,732.12 : 434,612.70 = 102,758.20 : x
  2. Step 2: Convert to fraction form
    289,732.12/434,612.70 = 102,758.20/x
  3. Step 3: Cross multiply
    289,732.12x = 434,612.70 × 102,758.20
  4. Step 4: Simplify right side
    289,732.12x = 44,660,018,749.14
  5. Step 5: Solve for x
    x = 44,660,018,749.14/289,732.12
  6. Step 6: Final answer
    x = 154,142.45

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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.