Home / 289,705.08-434,451.06-100,117.56

Finding the Fourth Proportional to 289,705.08, 434,451.06 and 100,117.56

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Solution

The fourth proportional to 289,705.08, 434,451.06 and 100,117.56 is: 150,139.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,705.08 : 434,451.06 = 100,117.56 : x
  2. Step 2: Convert to fraction form
    289,705.08/434,451.06 = 100,117.56/x
  3. Step 3: Cross multiply
    289,705.08x = 434,451.06 × 100,117.56
  4. Step 4: Simplify right side
    289,705.08x = 43,496,180,066.61
  5. Step 5: Solve for x
    x = 43,496,180,066.61/289,705.08
  6. Step 6: Final answer
    x = 150,139.51

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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.